Showing posts with label Choose Wisely!. Show all posts
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Porsche Mission R concept review

Indeed, this is bizarre: a race vehicle that accompanies its own 45-minute security preparation, led days before youre to move on board. Then, at that point, not long before you do, theres another. I could portray everything to you, however the quintessence is that in case all the dashboard lights out of nowhere become red, get the hellfire out. 


Theres some counsel regarding how to exit in a rush while contacting either the vehicle or the ground yet never both simultaneously, yet the times of shooting myself from a vehicle like a champagne plug withdrawing its container are presumably behind me, assuming they were ever before me. Yet, there are 900 volts of power in here, so I get it pays to watch out. 


Here is the inside of the Porsche Mission R, and heres the thing: this is an idea vehicle, exactly the same one that was on the Porsche remain at the Munich engine show in September. There is another, yet its a model for show purposes as it were. As far as vehicles that really work, this is the main Mission R in presence, and theres no arrangement to fabricate another. 


It has no authority esteem, yet informally I end up realizing its esteemed at 8 million (6.74m). However here I am, clad in flame resistant overalls from balaclava to boots, going to take to the track outside Porsches Los Angeles Experience Center. Also, several exploratory laps in the front seat have uncovered that assuming you leave the track under any condition, you will crash. Theres no run-off by any means... 


However, before I fire it up, lets just momentarily remind ourselves what it is, the reason it was constructed and consider the possibility that anything we can add something extra to its reality. First off we are familiar Porsche is that it never at any point does an idea vehicle without a more extensive reason at the top of the priority list. For this situation, its the companys first electric games vehicle. 


The beginning point was a 718 Cayman, however when the group was done nine months after the fact, just little pieces of the middle segment stayed; the rest is customized. I had trusted that the vehicle would really be founded on the foundation of the following Cayman, due in 2023 or 2024, however no such karma. 


The Mission Rs project administrator, Michael Behr, told me: Its in reality practically the same in size. Theres just 1mm contrast in wheelbase between the Mission R and the following Cayman, however we just discovered after we had done the vehicle! Its a total incident. 


What it likely owes most to, powertrain aside, is the 911 RSR Le Mans racer. It has the RSRs back pivot, its front suspension (the back suspension is a swagger not normal to some other Porsche) and surprisingly its mischievously intricate controlling wheel. 


The powertrain is strong: it has a 80kWh battery giving juice to front and back engines that have a joined result of just shy of 1100bhp in qualifying mode. In race mode, which is the thing that were limited to now, it makes a frivolous 670bhp. Full scale, it can hit 62mph from rest in under 2.5sec and not quit speeding up until it hits 192mph, in spite of that high downforce and, things being what they are, dominatingly morally obtained normal flax fiber bodywork. 


The inside is confusing until you understand that, adjacent to the guiding, brake and gas pedal, theres an excellent all out of one control that you want to dominate, which is a switch on the wheel that makes the thing go. 


Im obliged to say here that since this is an extraordinarily important idea that was made with state of the art advancements and hasnt experienced the improvement interaction of a typical Porsche race vehicle, it was formally restricted to 62mph. Baffled? Me as well. Terribly. So I really want to pick the accompanying words cautiously. Had individuals running the vehicle, who incorporate Le Mans victor Marc Lieb and Nrburgring 24 Hours champ Lars Kern, concluded that this specific principle was how might I put it? to be respected more in the break than the recognition depending on the prerequisite that I didnt own dependent upon it out in the open, then, at that point, I would have the option to base the driving impressions that follow on going a ton quicker. Also, from that you might reason what you will. 


The track is tight and specialized, brimming with pointless cambers, significantly more pointless knocks and some height changes. The radio pops into life in my earphones: Andrew. Position one on the directing wheel. Continue onto the track when youre prepared. 


What's more, that is it. You then, at that point, simply press the choke and away you go. Also, the main huge shock is its entirely uproarious in here so loud, indeed, that you understand the lengths that creators of electric street vehicles go to keep their engines calm. 


Youre very quickly on a straight, so you fix your right foot immediately. With four-wheel drive and tremendous Michelin smooth tires, youre never going to turn up the wheels, despite the fact that the vehicle has no foothold control or, besides, non-freezing stopping devices. For all the innovation packed into this vehicle, you are, powerfully talking, all alone. 


With such footing and power, the Mission R goes from close to halt to extremely, quick without allowing for you to contemplate any of the rates in the middle. This is whenever that Ive first determined an electric race vehicle, and I expected that I may require time to become acclimated to the moment choke reaction, however its simple, since its so straight. Dislike theres a force bend to comprehend: its only constantly. 


On that genuine elastic, with its RSR suspension and enormous (but unknown) downforce, the Mission R will pull 2g in the corners, so theres no absence of sidelong grasp, all things considered. Be that as it may, while the rear of the vehicle is frozen in place and should be incited before it will move, the front can strip away from the peak effectively albeit the subsequent understeer can be killed by taking off the choke. Also, as Kern called attention to me, if youre not content with the equilibrium, you could simply transform it mid-race. You could on the grounds that in principle, essentially you would have the option to pick and change the front-to-raise force split progressing from a control on the wheel. Which would be a serious cool stunt. 


Im more worried about not smashing. This isnt a troublesome vehicle to drive; actually, its emphatically harmless. However, the obstructions are close and the cost of missing the point isnt a number on which I decide to stay. Ten laps later, Im back in the pits. 


What intrigued me, as somebody who has brought up consistently the limits of EVs according to a unique delight perspective, is that when youre driving the Mission R, that is not how you think, in light of the fact that youre just excessively occupied. Im not saying it wouldnt be seriously engaging still with a yelling level six and a few oars to pull, yet even with unadulterated electrical power, the Mission R is including, fulfilling, intriguing and, considering that its intended to be an idea, unimaginably very much settled. 


So what, regardless, does it say about the fate of the Porsche sports vehicle? We realize Porsche never does these tasks in a vacuum, and this is no exemption. You will recollect how minimal changed was the Mission E of 2015 when it turned into the Taycan in 2019. So at any rate, what youre checking out is a major piece of things to come of Porsche client dashing. In any case, theres more here. Nothing is sure, however should Porsche conclude that an electric Cayman is whats required (and let's be honest, that needs to happen at some point), this presumably isnt 1,000,000 miles from what it will resemble or to be sure how it will drive. 


And keeping in mind that I would in any case rather stay in our inside combusted present, that is impossible any more extended; and assuming the electrically controlled future can be in any way similar to as much enjoyable to drive as this, that is a not thing to be feared but rather to which we can all truly look forward. 


How being four-wheel drive makes the Mission R lighter 

I asked Mission R project chief Michael Behr for what good reason his group didnt make the vehicle back driven and in this way lighter than the amazingly light 1500kg that it weighs with a determined front pivot. There were two replies. The undeniable one is that with almost 1100bhp in qualifying mode, foothold is truly significant. Be that as it may, added Behr, it would likewise make the vehicle heavier. 


Eh? said I. In any case, its valid: so incredible is the measure of energy recuperated through slowing down on the front hub (over 40% of which is finished by the engine alone) that assuming you shed it, you would require a battery half bigger to redress, and in light of the fact that batteries weigh morethan engines, the Mission R would become heavier. 


Strangely, when you drive the vehicle hard and apply the brakes, its impractical to tell where the regenerative slowing down from the engine prevents and conventional slowing down from the tremendous plates starts.

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Choose wisely! VW 2.5 North America

In the United States Volkswagen's are equipped with a 2.5 L, inline 5 cylinder, natural aspirated, petrol engine. The best and easiest way to describe it, is by having the fuel consumption of a six and the performance of a four cylinder. For example the smaller displacement but more advanced 2.0 TFSI (http://allaboutdieselz.blogspot.ro/2015/11/20-tfsi.html) is outperforming it. If someone is complaining about that this wasn't a fair comparison, here is another example, this time with a natural aspirated, 5 cylinder, in-house petrol engine from the past: the 2.3 L VR5 which was introduced in 1997 is having the exact same performance figures as a new 2.5, but it's 200 cm3 smaller + it's almost a twenty years old engine. What I'm trying to highlight is that Volkswagen is selling for the U.S. an outdated engine for some reason, from which the modern benefits of a VW engine are mostly missing, such as the FSI (fuel stratified ignition) system. You got nothing to loose even if you're choosing a 2.0 CR TDI over it; 140 & 170 HP versions are available which are having 320 NM (236 lb-ft)/350 NM (258 lb-ft) of torque available from a very low 1750 - 2500 rpm. Fuel economy is also improved in case of the TDI, they can easily return 50 mpg in normal driving conditions.

ID code - AAF, ACU
2.5 L, 110 HP — 1991–1995 Volkswagen Eurovan
ID code - BGP, BGQ, BPR, BPS
2.5 L, 150 HP — 2005 – present
ID code - CBT, CBU
2.5 L, 170 HP — 2007 – present

-Engine displacement & engine configuration:
2480 cm3 (151.3 cu in) inline 5 cylinder engine; bore x stroke: 82.5 by 92.8 mm (3.25 in × 3.65 in), stroke ratio: 0.89:1 - undersquare/long-stroke, 496.1 cm3 per cylinder
-Cylinder block & crankcase:
GJL250 grey cast iron; two-part oil sump, die-forged steel crankshaft with six main bearings, water---cooled oil cooler:
-Cylinder head & valvetrain:
cast aluminium alloy; four valves per cylinder, 20 valves total, low friction roller finger cam followers with automatic hydraulic valve clearance compensation, chain-driven (relay method, using two simplex roller chains) double overhead camshaft (DOHC), variable intake valve timing
-Aspiration:
cast aluminium intake manifold, single throttle body with electronically controlled 'drive by wire' throttle butterfly valve
-Fuel system:
common rail multi-point electronic sequential indirect fuel injection with five intake manifold-sited --fuel injectors:
-Ignition system & engine management:
five individual direct-acting single spark coils with longlife spark plugs, Bosch Motronic engine control unit (ECU), secondary air injection during cold start phase to reduce emissions, single knock sensor
-Exhaust system:
one-piece cast iron 5 into 1 exhaust manifold, ceramic catalytic converter, two heated oxygen sensors (three when equipped with California emissions) for permanent lambda control.


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Choose wisely! BMW N45

This engine was produced between 2004 - 2011. Engine codes: 45B16, N45NB16, N45B20S. Models: BMW 116i, BMW 316i (E90), BMW 320si. Problems: the N45 engine series have had a bad reputation for their not too impressive performance (16i) + relatively high fuel consumption; it was producing way too much vibrations; unreliable chain type timing system; the ValveTronic variable cam timing system is missing from this series of engines; the wrongly adjusted chain tensioner is making the chain sticky which from that pont is capable of running over a few cogs and this is leading to serious service costs. Even later models suffer from this problem, they received a purpose shaped sheet of metal which was preventing the chain from getting loose, but it didn't solved the problem entirely. The 320si models are having a very thick cylinder wall, which often cracks.
320si

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Choose wisely! Alfa Romeo 2.0 Twin spark

This engine was produced between 1995 - 2010. Engine codes: AR 32301, AR 67204, AR 32310, AR 32303, AR 34103, AR 36301, AR 16201. Models: Alfa 145/146 2.0 TS (QV/TI), Alfa 147 2.0 TS, Alfa 156 2.0 TS, Alfa 166 2.0 TS, Alfa GTV/Spider. Problems: when the engine is cold it's very sensitive to high revs, in such of case the cylinder can break; even when it was new the owners complained about high oil consumption and too much flue gas depositing; this can lead to the rockers abnormal operation or the whole lubrication system can fail.
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Choose wisely! Saab Turbo

This series of turbo petrol engines was in production between 1997-2010. Engine codes: B205E, B205L, B205R, B235E, B235L, B235R. Models: Saab 9-3 2.0 Turbo & 2.3 Turbo (1999-2003), Saab 9-5 2.0 & Turbo a 2.3 Turbo (from 1997). Problems: the main problem is the block's mechanical instability; the front side of the engine's block is overheating, the turbocharger's heat isolation is bad quality and because of these the bearings from the crankshaft can move and from this point the crankshaft will seize. Frequent oil changes are obligatory! The timing chain must be replaced after 200000+ km (124274+ miles) and after the bankruptcy of the brand the supply of the parts can be problematic.
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Choose wisely! BMW N63 4.4 biturbo

This engine is in production since 2008, but it's risky to buy up to 2012. Engine code: N63B44. Models: BMW 750i/Li, BMW X5/X6 50i, BMW X6 ActiveHybrid, BMW 550i (and Gran Turismo), BMW 650i (coupe, cabrio). Problems: it's weakest point is the cooling system, which is only getting worse by the exhaust and two turbochargers which are mounted inside the cylinder bank. Hotspots are appearing in the heat shield and there the oil starts to burn. This problem combined with the turbochargers water cooling malfunction leads to the compressor wheels dirtiness and because of the too much heat generated + the water cooling problem, the hot turbochargers are sealing the two cylinder heads. If it happens, it will also damage the camshafts and the variable cam timing!

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Choose wisely! Isuzu 3.0 V6 D-MAX

This engine was in production between 2001-2008 in the Opel Vectra C 3.0 DTI, Opel Signum 3.0 DTI, Saab 9-5 3.0 TiD, Renault Vel Satis 3.0 dCi and Renault Espace 3.0 dCi. Engine code: 6DE1, Y60DT, P9X. Problems: Denso fuel injection system, the wiring is bad quality, low quality cooling system and the coming off wet cylinder liners are killing the engine. If it happens, the repair costs are so high, that they are not worth it.

The V6 D-MAX engine's maintenance is pretty expensive but the timing chain's replacement is a financial collapse!
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Choose wisely! A list of engines/cars which should be avoided!

The Ford DLD engine is an automobile engine family - a group of compact inline 4 cylinder diesel engines developed jointly by Ford of Britain and the automotive diesel specialist PSA Group
(Peugeot/Citroën). The Ford of Britain/PSA joint venture for the production of the DLD/DV was announced in September, 1998. Half of the total engine count are produced at Ford of Britain's main plant at Dagenham, England and at Ford's Chennai plant in India, the other half at PSA's Trémery plant in France.

The inline 4 engines are sold under the Duratorq TDCi name by Ford, and as the HDi by Citroën and Peugeot. Mazda also uses the Ford made DLD engine in the Mazda2 and the Mazda 3, calling it the MZ-CD or CiTD.

Officially, there are two families of engines in the range:
-The 1.4 L DLD-414 is generally non-intercooled
-The 1.5 L derived from the 1.6 L
-The 1.6 L DLD-416 is always intercooled

Ford later added their unrelated 1.8 L DLD-418 engine to the DLD family, though it is properly part of the Ford Endura-D engine family.

DLD-414:
The Duratorq DLD-414 (or DV4) is a 1.4 L (1398 cm3/85 cui) inline 4 cylinder turbodiesel. Output is 67 HP @ 4500 rpm and 160 NM (117 lb-ft) @ 2000 rpm.

The DV4 is available in two versions:
One, an 8 valve design, uses a Borg-Warner KP35 turbocharger but no intercooler. This is the same turbocharger as the Renault K9K Diesel. It is Euro 3 compliant, but will receive a Diesel particulate filter from 2006 to make it Euro 4 compliant. In Ford, Mazda, and most PSA applications it uses a Siemens SID804 or SID802 common rail injection system. In some PSA applications a Bosch common rail system is used.

A second version uses a DOHC 16 valve design, with an intercooled variable geometry turbocharger. This engine uses Delphi Corp.'s DCR1400 common rail injection system. This derivation will no longer be built from 2006, as it will not be able to comply with the Euro 4 regulations.

Applications:
8 valve non-intercooled, 55 HP and 130 NM  (96 lb-ft)
2005–2008 Citroën C1/Peugeot 107/Toyota Aygo 1.4 HDi
8 valve non-intercooled, 68 HP and 150 NM (111 lb-ft)
2003–2009 Citroën C2 1.4 HDi
8 valve non-intercooled, 68 HP and 160 NM (118 lb-ft)
2002–2009 Citroën C3 1.4 HDi
2002–2008 Ford Fiesta 1.4 TDCi
2002–2008 Ford Fusion (European) 1.4 TDCi
2002–2009 Peugeot 206 1.4 HDi
2005–2009 Peugeot 1007 1.4 HDi
2004 Citroen Xsara 1.4 HDI
2002–2007 Mazda 2/Demio 1.4D
2008–present Mazda 2/Demio 1.4D
2007–present Ford (India) 1.4 TDCi Fiesta, also marketed as the Ikon in South Africa.
2008–present Ford Bantam TDCi commercial vehicle in South Africa.
16 valve intercooled, 90 HP and 200 NM (147 lb-ft)
2001–2005 Citroën C3 1.4 HDi 16V
2002–2005 Suzuki Liana 1.4 DDiS

DLD-416:
The DLD-416 (or DV6) is a 1.6 L (1560 cm3/95 cui) UK Built version used by Ford, Volvo, PSA, Mini and Mazda.

The DV6 has a DOHC 16 valve design, with an intercooled variable geometry turbocharger (for example, Garrett GT1544V), and with Diesel particulate filter is Euro 5 compliant. In 2011 the 16V DOHC was reduced to 8V and only SOHC and called DV-6C/DV-6D.

Applications include:
2007–2008 Suzuki SX4 1.6 DDiS, 90 HP and 215 NM (159 lb-ft)
2007–2009 MINI Cooper D 1.6 110 HP and 240 NM (177 lb-ft)
2007–present Citroën C4 Picasso 1.6 HDi, 110 HP and 240 NM (177 lb-ft)
2010–present Citroën C3 Picasso 1.6 HDi, 110 HP and 240 NM (177 lb-ft)
2006–present Citroën Berlingo 1.6 HDi, 75–90 HP and 172–215 NM (127–159 lb-ft)
2008–2009 Citroën C2 1.6 HDi, 110 HP and 269 NM (198 lb-ft)
2005–present Citroën C3 1.6 HDi, 90 HP and 215 NM (159 lb-ft)
2009–present Citroën DS3 1.6 HDi, 90 HP and 230 NM (170 lb-ft)
2009–present Citroën DS3 1.6 HDi, 110 HP and 269 NM (198 lb-ft)
2011–present Citroën DS4 1.6 HDi, 110 HP and 269 NM (198 lb-ft)
2004–present Citroën C4 1.6 HDi, 90–109 HP and 215–240 NM (159–177 lb-ft)
2004–present Citroën C5 1.6 HDi, 109 HP and 240 NM (177 lb-ft)
2004–2009 Citroën Xsara Picasso 1.6 HDi, 109 HP and 240 NM (177 lb-ft)
2010–present Ford C-MAX/Grand C-MAX 1.6 TDCi, 115 HP and 270 NM (199 lb-ft)
2005–2010 Ford Fiesta 1.6 TDCi, 90 HP and 200 NM (148 lb-ft)
2010–present Ford Fiesta 1.6 TDCi, 95 HP and 212 NM (156 lb-ft)
2005–2012 Ford Fusion (European) 1.6 TDCi, 90 HP and 215 NM (159 lb-ft)
2004–present Ford Focus 1.6 TDCi 90, 90 HP and 215 NM (159 lb-ft)
2004–present Ford Focus 1.6 TDCi 110, 109 HP and 240 NM (177 lb-ft)
2004–2010 Ford Focus C-MAX 1.6 TDCi 90, 90 HP and 215 NM (159 lb-ft)
2003–2010 Ford Focus C-MAX 1.6 TDCi 110, 109 HP and 240 NM (177 lb-ft)
2008–present Mazda2 MZ-CD 1.6, 90 HP and 212 NM (156 lb-ft)
2003–present Mazda3 MZ-CD 1.6, 109 HP and 240 NM (177 lb-ft)
2003–2006 Peugeot 206 1.6 HDi, 109 HP and 240 NM (177 lb-ft)
2006–2012 Peugeot 207 1.6 HDi, 90–109 HP and 215–240 NM (159–177 lb-ft)
2005–2008 Peugeot 307 1.6 HDi, 90–109 HP and 215–240 NM (159–177 lb-ft)
2008–present Peugeot 308 1.6 HDi
2003–2010 Peugeot 407 1.6 HDi, 109 HP and 240 NM (177 lb-ft)
2010–present Peugeot 508 1.6 HDi, 112 HP and 240 NM (177 lb-ft)
2007–2012 Volvo C30 D2 and DRIVe, 115 HP and 270 NM (199 lb-ft)
2004–2012 Volvo S40 1.6D, 109 HP and 240 NM (177 lb-ft)
2004–2012 Volvo V50 1.6D, 109 HP and 240 NM (177 lb-ft)
2010–present Volvo S60/V60 1.6D, 115 HP and 240 NM (177 lb-ft)
2007–present Volvo V70 1.6D, 115 HP and 240 NM (177 lb-ft)
2009–present Volvo S80 1.6D DRIVe, 109 HP and 240 NM (177 lb-ft)

DLD-418:
The Duratorq DLD-418 is a 1.8 L (1753 cm3) intercooled common rail diesel engine. It is only a DLD by name, since it is completely unrelated to the 1.4/1.6 units, and is derived from Ford's own 1.8 8v Endura-D engine that saw service through the 1980s and 1990s. However, Ford considers it part of the DLD family, as evidenced by the official "DLD" name.

The Endura-D was heavily revised and updated with a variable-vane turbocharger and a Delphi high pressure common rail injection system and relaunched in 2001 as the DuraTorq TDCi, with the original engine being rebadged 'DuraTorq TDDi'.

The output of the original 2001 unit is 113 HP @ 3800 rpm and 250 NM (184 lb-ft) @t 1850 rpm. In August 2002, a version appeared in the Ford Focus with reduced power, producing 98 HP @ 3850 rpm and 240 NM (177 lb-ft) @ 1750 rpm. Early 2005 saw the more powerful unit's torque boosted to 280 NM (207 lb-ft) @ 1900 rpm, with power remaining unchanged at 113 HP.

The latest versions of the DLD-418 were released with the 2007 Ford Mondeo. One has an output of 98 HP @ 3850 rpm and 280 NM (207 lb-ft) @ 1800 rpm. The more powerful variant has an output of 123 HP @ 3700 rpm and 320 NM (236 lb-ft) @ 1800 rpm.

Applications:
2001–2004 Ford Focus 1.8 TDCi 115 HP and 250 NM (184 lb-ft)
2002–2004 Ford Focus 1.8 TDCi 100 HP and 220 NM (177 lb-ft)
2005–2011 Ford Focus 1.8 TDCi 115 HP and 280 NM (207 lb-ft)
2005–2010 Ford Focus C-MAX 1.8 TDCi 115 HP and 280 NM (207 lb-ft)
2006–2012 Ford Galaxy 1.8 TDCi 100 HP and 280 NM (207 lb-ft)
2007–2012 Ford Mondeo 1.8 TDCi 100 HP nd 280 NM (207 lb-ft)
2006–2012 Ford Galaxy 1.8 TDCi 125 HP and 320 NM (236 lb-ft)
2006–2012 Ford S-MAX 1.8 TDCi 125 HP and 320 NM (236 lb-ft)
2007–2012 Ford Mondeo 1.8 TDCi 125 HP and 320 NM (236 lb-ft)

Some people might feel offended by this list, but believe me, French car companies are manufacturing the worst electronics in the world + the 1.8 TDCi is one of the worstly managed engines ever! It suffers from turbo and fuel injection problems which aren't cheap to repair... If you are owning one and the fuel consumption is somewhere around 10-16 L/100 km, get rid of it as fast as you can! This means one (or more) of your injectors are gone, and they are costing 500 euro/piece to replace! (You got 4 in total, but if you're unlucky and had to replace 3 of them, that's a lot of money). Cheap, aftermarket ones won't give the desired results...  Here is what I'm talking about: https://www.youtube.com/watch?v=RiPwco69mVQ

In case of the 1.6 HDi the problems are similar, but here if one of the fuel injectors is going wrong, the problem won't be recognized in time, because the engine is equipped with a "district leveling function" system which will keep the ride smooth, even under inadequate conditions... If this problem will be detected too late, then the EGR valves will be damaged also, because of the badly sprayed diesel fuel's burning which will clog the particulate filter and the DPF. When the EGR valve is damaged, it's allowing the soot full exhaust gases to travel backwards in the engine, even if this action shouldn't take place. (This will cost 960 euro at a car service, and the worst part is that, I took for example a 5 year old Peugeot 308 1.6 HDi, which was under 100000 km). After the mechanics solved the problems and re-programed the engine, you might look for a new DPF (http://allaboutdieselz.blogspot.ro/2015/08/diesel-particulate-filter-dpf.html), because the old one will be full of soot, just like in this pic:

UPDATE! FROM NOW ON YOU'RE ABLE TO READ ABOUT THE PROBLEMS OF EACH ENGINE FROM THIS LIST: https://allaboutdieselz.blogspot.com/2018/09/hdi-engines-and-their-problems.html
The mentioned 308 1.6 HDi DPF
Two pics of the 308's clogged particulate filter

Remember, it don't depend on what type of car you see it (Citroen, Peugeot, Ford, Volvo, Mazda, Mini or anything else), avoid i
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Choose wisely! Ford 1.8 TDCI

The 1.8 L inline 4 cylinder turbo-diesel engine is overloading the multi plate clutch (4th video here: http://allaboutdieselz.blogspot.ro/2015/08/3d-animated-tutorial-videos-of-diesel.html). It's operation isn't as smooth as the bigger 2.0 or 2.2 L TDCI; the boost is building up too suddenly; you'll have to shift gears more often which will lead to the disproportionately high load of the engine; the springs protrude from the socket, damping material is wearing out between them and the starter motor is cut. The Delphi type fuel injecting system will inevitably go bust and the death of the high pressure pump will come sooner or later! The timing of the 1.8 TDCI is a combined chain-wet belt (running on oil) unit, so the replacement at 160000 km (99419 miles) is expensive (somewhere around 520 euro) + the multi plate clutch must be replaced at 300000 km (186411 miles)! This particular engine can be found in the earlier generation Ford Focus and Mondeo. Avoid it!
 
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Choose wisely! Peugeot 206

I'm not exaggerating if I say it's one of the least successful cars ever produced! I know a lot of people who sold it after a few month, because they have had so many problems with it. The list of commonly appearing issues is a long:
-Central locking problem: A common central locking problem on the Peugeot 206, is 'bouncing'. This is when you either lock or unlock the car using the central locking, and it immediately re-opens or re-locks. This problem is caused by a faulty actuator.
-Loud noise from HDI engine: When you have your HDI engine running, and you hear a very loud metal sort of tapping noise, then this is a problem with the crankshaft pulley.
-Engine misfiring / loss of power: You may have noticed that your engine is misfiring and when you are driving there is a loss of power. This problem is due to a faulty ignition coil pack. You may also have noticed that the engine management warning light, is on the dashboard.
-Engine stalling: It is known on the 206, especially for cars that are either over 2 years old or have done more that 40000 miles, to have problems with random stalling. The usual cause is a faulty potentiometer and faulty stepper motor.
-Water leaking into front footwells: If you have noticed that the carpets in the front footwells are wet from water leaking into the cabin, this is usually due to a blockage in the bulkhead drain. The drain can get blocked up with leaves or other debris, which will need to be removed.

These are only the common problems found in the 206 but depending on the year it was released or the engine it has, specific problems can appear! After fixing it, you don't have any kind of warranty that something else would't go wrong in a short period of time... I understand the fact that some people can't afford a more expensive car, but in this price range you can easily find another compact city car which is more reliable and it's a better value for money. I gave a few tips for buying a city car, check it out if you're interested: http://allaboutdieselz.blogspot.ro/2015/08/diesel-or-petrol-engine-in-city-car.html