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Year Make/Model Repair Frequencysuccessful repair trips per 100 cars per year Compared to all models for the same year  
2015 Audi A4 / S4   12 A4 / S4s, 5.4 months of data per A4 / S4, average 4400 miles

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2015 BMW 3-Series / M3 34 3-Series / M3s, 3.8 months of data per 3-Series / M3, average 3500 miles

Includes 4-Series.
28
30% 30% Fewest Trips Most Trips
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2014 Audi A4 / S4 54 A4 / S4s, 8.6 months of data per A4 / S4, average 7700 miles10
0% 0% Fewest Trips Most Trips
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2014 BMW 3-Series 83 3-Series, 8.0 months of data per 3-Series, average 8800 miles

Includes 4-Series.
40
50% 50% Fewest Trips Most Trips
see reported repairs

 

2013 Audi A4 / S4 104 A4 / S4s, 9.4 months of data per A4 / S4, average 18700 miles

Refreshed for this model year.
6
0% 0% Fewest Trips Most Trips
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2013 BMW 3-Series 4dr 75 3-Series 4drs, 9.5 months of data per 3-Series 4dr, average 19500 miles24
20% 20% Fewest Trips Most Trips
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2013 BMW 3-Series 2dr   11 3-Series 2drs, 10.4 months of data per 3-Series 2dr, average 13400 miles

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2012 Audi A4 31 A4s, 9.0 months of data per A4, average 35700 miles26
20% 20% Fewest Trips Most Trips
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2012 Audi S4 53 S4s, 9.4 months of data per S4, average 32200 miles55
60% 60% Fewest Trips Most Trips
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2012 BMW 3-Series 2dr and wagon   17 3-Series 2dr and wagons, 9.5 months of data per 3-Series 2dr and wagon, average 26000 miles

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2012 BMW 3-Series sedan 29 3-Series sedans, 8.2 months of data per 3-Series sedan, average 26400 miles

First year for F30 3-Series sedan.
51
60% 60% Fewest Trips Most Trips
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2011 Audi S4 51 S4s, 10.0 months of data per S4, average 44500 miles

The repair frequency for the 2010 peaked at the same level a year ago, but has improved since. Could be an end-of-warranty blip.
45
40% 40% Fewest Trips Most Trips
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2011 Audi A4 42 A4s, 10.1 months of data per A4, average 45000 miles

The repair frequency for the 2010 peaked at the same level a year ago, but has improved since. Could be an end-of-warranty blip.
48
50% 50% Fewest Trips Most Trips
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2011 BMW M3   23 M3s, 9.0 months of data per M3, average 38500 miles

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2011 BMW 335 44 335s, 8.6 months of data per 335, average 39600 miles

Average odometer reading much lower for the M3.
60
60% 60% Fewest Trips Most Trips
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2011 BMW 328 112 328s, 8.2 months of data per 328, average 38600 miles

Average odometer reading much lower for the M3.
65
70% 70% Fewest Trips Most Trips
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2010 Audi A4 36 A4s, 8.8 months of data per A4, average 55100 miles

Multiple reports of excessive oil consumption for the 2.0T engine. Some engines rebuilt with updated valves and piston rings.
27
10% 10% Fewest Trips Most Trips
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2010 Audi S4 55 S4s, 10.7 months of data per S4, average 53400 miles

Multiple reports of excessive oil consumption for the 2.0T engine. Some engines rebuilt with updated valves and piston rings.
49
40% 40% Fewest Trips Most Trips
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2010 BMW 328 28 328s, 9.7 months of data per 328, average 52200 miles53
50% 50% Fewest Trips Most Trips
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2010 BMW 335   14 335s, 9.6 months of data per 335, average 50700 miles

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2009 Audi A4 3.2 37 A4 3.2s, 9.4 months of data per A4 3.2, average 57200 miles

First model year of the B8 A4. Multiple reports of excessive oil consumption for the 2.0T engine. Some engines rebuilt with updated valves and piston rings.
41
20% 20% Fewest Trips Most Trips
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2009 Audi A4 2.0T 44 A4 2.0Ts, 9.8 months of data per A4 2.0T, average 60300 miles

First model year of the B8 A4. Multiple reports of excessive oil consumption for the 2.0T engine. Some engines rebuilt with updated valves and piston rings.
64
50% 50% Fewest Trips Most Trips
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2009 BMW 328 50 328s, 9.6 months of data per 328, average 56300 miles

Average odometer reading much lower for the M3.
35
20% 20% Fewest Trips Most Trips
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2009 BMW 335 26 335s, 9.6 months of data per 335, average 51500 miles

Average odometer reading much lower for the M3.
63
50% 50% Fewest Trips Most Trips
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2009 BMW M3   13 M3s, 9.1 months of data per M3, average 37600 miles

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2008 Audi A4 40 A4s, 9.7 months of data per A4, average 73800 miles72
60% 60% Fewest Trips Most Trips
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2008 Audi S4 / RS4   10 S4 / RS4s, 11.2 months of data per S4 / RS4, average 58500 miles

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2008 BMW 335 44 335s, 9.5 months of data per 335, average 66000 miles

Average odometer reading much lower for the M3. Non-M repair frequency spiking, possibly because CPO warranty ending.
72
60% 60% Fewest Trips Most Trips
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2008 BMW M3 30 M3s, 9.2 months of data per M3, average 47900 miles

Average odometer reading much lower for the M3. Non-M repair frequency spiking, possibly because CPO warranty ending.
83
70% 70% Fewest Trips Most Trips
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2008 BMW 328 35 328s, 8.5 months of data per 328, average 70500 miles

Average odometer reading much lower for the M3. Non-M repair frequency spiking, possibly because CPO warranty ending.
84
70% 70% Fewest Trips Most Trips
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2007 Audi A4 47 A4s, 8.5 months of data per A4, average 84100 miles57
40% 40% Fewest Trips Most Trips
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2007 Audi S4 / RS4   19 S4 / RS4s, 9.9 months of data per S4 / RS4, average 67000 miles

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2007 BMW 328 64 328s, 9.2 months of data per 328, average 79500 miles75
60% 60% Fewest Trips Most Trips
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2007 BMW 335 53 335s, 8.7 months of data per 335, average 78000 miles83
60% 60% Fewest Trips Most Trips
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2006 Audi A4 67 A4s, 8.8 months of data per A4, average 102800 miles

Includes 2005.5. First model year of the B7 A4.
73
50% 50% Fewest Trips Most Trips
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2006 Audi S4   15 S4s, 8.5 months of data per S4, average 81900 miles

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2006 BMW 3-Series 2dr   21 3-Series 2drs, 10.9 months of data per 3-Series 2dr, average 69100 miles

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2006 BMW 3-Series 4dr 67 3-Series 4drs, 9.0 months of data per 3-Series 4dr, average 94100 miles

First year for the E90 4-door.
70
40% 40% Fewest Trips Most Trips
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2005 Audi S4   20 S4s, 9.6 months of data per S4, average 82000 miles

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2005 Audi A4   15 A4s, 9.1 months of data per A4, average 104500 miles

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2005 BMW M3   15 M3s, 9.1 months of data per M3, average 70800 miles

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2005 BMW 3-Series 28 3-Series, 9.8 months of data per 3-Series, average 94100 miles

Average odometer reading much lower for the M3.
66
30% 30% Fewest Trips Most Trips
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2004 Audi S4   19 S4s, 8.6 months of data per S4, average 96200 miles

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2004 Audi A4 27 A4s, 8.4 months of data per A4, average 118900 miles127
90% 90% Fewest Trips Most Trips
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2004 BMW 3-Series 59 3-Series, 8.3 months of data per 3-Series, average 110000 miles

Average odometer reading much lower for the M3.
79
40% 40% Fewest Trips Most Trips
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2004 BMW M3   12 M3s, 9.5 months of data per M3, average 101500 miles

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2003 Audi A4   23 A4s, 8.2 months of data per A4, average 136100 miles

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2003 BMW 3-Series 34 3-Series, 8.9 months of data per 3-Series, average 108000 miles

Average odometer reading much lower for the M3.
108
60% 60% Fewest Trips Most Trips
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2002 Audi A4 28 A4s, 8.8 months of data per A4, average 151000 miles

First model year of the B6 A4, very high repair frequency. S4 still B5.
147
100% 100% Fewest Trips Most Trips
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2002 BMW M3   11 M3s, 8.9 months of data per M3, average 111900 miles

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2002 BMW 3-Series 39 3-Series, 8.7 months of data per 3-Series, average 122800 miles

Average odometer reading much lower for the M3.
92
50% 50% Fewest Trips Most Trips
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2001 Audi A4 / S4   16 A4 / S4s, 8.2 months of data per A4 / S4, average 125100 miles

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2001 BMW 3-Series 41 3-Series, 8.2 months of data per 3-Series, average 136500 miles107
60% 60% Fewest Trips Most Trips
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2000 Audi A4 / S4   10 A4 / S4s, 8.1 months of data per A4 / S4, average 160500 miles

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2000 BMW 3-Series 29 3-Series, 7.5 months of data per 3-Series, average 137300 miles77
30% 30% Fewest Trips Most Trips
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Audi A4 / S4 / RS4 vs. BMW 3-Series Reliability Comparisons

You won't find Audi A4 / S4 / RS4 or BMW 3-Series reliability information like this anywhere else. Actual repair frequencies, not just vague dots, to make it clear how much the Audi A4 / S4 / RS4 and the BMW 3-Series truly differ in reliability.

These stats are promptly updated four times a year, to much more closely track Audi A4 / S4 / RS4 and BMW 3-Series reliability as the cars age. Others tell you how reliable the Audi A4 / S4 / RS4 and the BMW 3-Series were a year ago, when the cars were a year younger and had 12,000 fewer miles on them. Only TrueDelta tells you how reliable the Audi A4 / S4 / RS4 and the BMW 3-Series have been recently.

What People Are Saying about Reliability and the Audi A4 / S4 / RS4

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What Our Members Are Saying about the Reliability and Durability of the Audi A4 / S4 / RS4

Audi A4 / S4 / RS4 Reliability and Durability: Pros
YearBody/PowertrainComment
2010 4dr Wagon turbocharged 220hp 2.0L I4
8-speed shiftable automatic AWD
65,000 miles and not a single problem other than routine oil changes and tires. My BMW 335i is always in the shop and is a maintenance nightmare.
2006 4dr Sedan This car is bullet-proof. End of story. The B7 A4 is the evolution of B6/B7 platform and most of the kinks are ironed out in the final years. No worries here.
2006 4dr Sedan So far, perfect
2006 4dr Sedan turbocharged 225hp 2.0L I4
6-speed manual AWD
Like that I can drive an Audi for 6+ years/100k+ miles and still feel safe.
2006 4dr Sedan turbocharged 225hp 2.0L I4
6-speed manual AWD
Dont walk; Run from any 4 cylinder Audi. There are many better alternatives. The engine block is solid; Everything attached to it is waiting to fail, usually with collateral damage. 5,000 USD has been spent over years 2013-2015 for service with a Audi/VW ASE INDI shop charging conservativly (due to the frequency I was forced to visit). Many interior trim pieces, while soft to the touch, are begining to seperate and fail. Sunroof rattles all the time. Power seats worked in some directions. Handy under storage seat bins were a nice addition. Timing belt service requies removal on the entire front clip, headlamps, crash bar, radiator, etc. The 2.0 also employs a timing chain on the rear of the engine driven by the exhaust camshaft (itself driven by the timing belt), which drives the intake camshaft and houses a variable valve timing unit. The chain and tensioner assy. are prone to failure after 110k and should be replaced along with the high pressure pump's cam follower. This 15-20$ follower is the achilees tendon of the entire cam-tower & pistons, I've seen the black protective coating worn away within 5k miles on my car. After the black surface coating is worn away, the cam lob begins shave the metal surface of the cam follower, dropping the metal shards into the oil flow. Fuel also mixes with the oil commonly at this pump due to seal failure inside the pump housing. Oil change intervals should not exceed 5k miles for this engine. Evap emissions system is effectively useless as the manufactorer has shipped/contiues to ship known sub-par components (leak-check pump & assy.), which causes intermittent MIL warnings and continued, pending OBD codes.Eventually, after 10-15k miles the vacuum's check control pump fails completely and requires replacement or a constant check engine lamp and lowered MPG's/hp. The faulty system will not pass an emissions inspection until replaced with a new, less broken unit from the dealer.
2005 2dr Convertible so far so good, but I have only had the car less than a month, too soon to tell
2002 4dr Sedan turbocharged 170hp 1.8L I4
6-speed manual AWD
120k miles + and counting, no major issues
Audi A4 / S4 / RS4 Reliability and Durability: Cons
YearBody/PowertrainComment
2010 4dr Sedan turbocharged 220hp 2.0L I4
8-speed shiftable automatic AWD
Very expensive to fix and not with the same history of reliability as Benz.
2007 4dr Sedan turbocharged 225hp 2.0L I4
6-speed manual AWD
My second A4 is better than the last, but I am glad I leased instead of buying. Reliability is just not world class.
2006 4dr Sedan 340-horsepower 4.2L V8
6-speed manual AWD
Do not buy one of these used unless the timing chain pre-tensioners have been replaced. There are a lot of complaints of these breaking at 100,000 miles. Mine went at 99,100 miles and the dealer quoted me $10,000 to fix. I had to sell this car at a loss. What a waste!
2006 4dr Sedan turbocharged 225hp 2.0L I4
6-speed manual AWD
Expensive to maintain, constant repairs. 2500$ service bill (excluding oil changes) avg. per year to keep road-worthy.
2006 4dr Sedan turbocharged 225hp 2.0L I4
6-speed manual AWD
Not reliable, lots of dealer visits,
2005 4dr Sedan 340-horsepower 4.2L V8
6-speed manual AWD
The two cars I looked at were low mileage 2005s, CPO, and both had full service history, of which there was a lot. Both cars noted cooling issues and problems with the steering system repaired under warranty. Also numerous electrical problems.
2005 4dr Sedan In the shop 10 times during last seven months. Towed 4 times because not drivable
2004 4dr Sedan Reputation for mechanical problems and expensive repairs
2003 4dr Wagon turbocharged 170hp 1.8L I4
6-speed manual AWD
The car is not reliable - sensors, electrics, etc.
2002 4dr Sedan turbocharged 225hp 2.0L I4
6-speed manual AWD
Had to have many repairs before all the bugs worked out - now seems reliable (knock on wood)
 

What Our Members Are Saying about the Reliability and Durability of the BMW 3-Series

BMW 3-Series Reliability and Durability: Pros
YearBody/PowertrainComment
2012 4dr Sedan turbocharged 240hp 2.0L I4
8-speed shiftable automatic RWD
I traded in a 2005 BMW with 92,000 miles on it, if the realiability of the old one is any indication to the experience I hope to have with the 2012, then I have little to nothing to worry about.
2009 0 My car has been very reliable. I got a cerfited pre owned so all things a free at dealer. If you are buying one, then get a cpo one. well worth it.
2009 0 My car has been very reliable. I got a cerfited pre owned so all things a free at dealer. If you are buying one, then get a cpo one. well worth it.
2008 4dr Sedan turbocharged 240hp 2.0L I4
6-speed manual RWD
The car has a BETTER THAN AVERAGE frequency of repair record with Consumer Reports.
2008 2dr Coupe turbocharged 425hp 3.0L I6
7-speed automated manual RWD
Not yet tested to a full extent on my M3 under review, bust as previous BMW owner I enjoyed minimal component failures after many years of ownership.
2008 2dr Coupe turbocharged 300hp 3.0L I6
6-speed manual RWD
History is promising.
2008 2dr Coupe turbocharged 300hp 3.0L I6
8-speed shiftable automatic RWD
Historically, reliable
2008 2dr Hardtop conv. turbocharged 240hp 2.0L I4
8-speed shiftable automatic AWD
Have owned this car for 5 years; have had two replacement high pressure fuel pumps; replaced steering rack; new turbo gaskets (both turbos); replaced articulating hard top cables - all in the first 3 years and all under warranty! Nothing has gone wrong in the past two years so perhaps this was relatively new model growing pains.
2008 2dr Hardtop conv. turbocharged 240hp 2.0L I4
8-speed shiftable automatic AWD
Have owned this car for 5 years; have had two replacement high pressure fuel pumps; replaced steering rack; new turbo gaskets (both turbos); replaced articulating hard top cables - all in the first 3 years and all under warranty! Nothing has gone wrong in the past two years so perhaps this was relatively new model growing pains.
2007 2dr Coupe turbocharged 240hp 2.0L I4
8-speed shiftable automatic AWD
This vehicle has a great performance record.
BMW 3-Series Reliability and Durability: Cons
YearBody/PowertrainComment
2011 2dr Hardtop conv. turbocharged 240hp 2.0L I4
8-speed shiftable automatic RWD
Glovebox won't open.
2010 4dr Sedan turbocharged 300hp 3.0L I6
6-speed manual RWD
I'm a little nervous about repair costs and frequency. I keep reading about 4-figure repair bills, but there are others who say they've done well with just normal maintenance. Consumer Reports gives the 2010 328i a lot of red dots which is a goo
2010 4dr Sedan turbocharged 300hp 3.0L I6
6-speed manual RWD
Small things keep breaking or failing. The engine and drivetrain are solid though.
2009 4dr Sedan turbocharged 255hp 3.0L I6 Diesel
8-speed shiftable automatic RWD
Always a glitch or two.
2009 2dr Coupe turbocharged 240hp 2.0L I4
8-speed shiftable automatic AWD
Fuel pump, oil cooler, and run flat tire issues on the 335i turned me off. Will likely be covered by warranty, but met multiple people who had week long+ repairs for these issues. After warranty, 1,200+ for each of these issues is apparently common.
2009 4dr Sedan turbocharged 425hp 3.0L I6
6-speed manual RWD
More prone to breakdowns than the Japanese competition.
2008 2dr Coupe turbocharged 300hp 3.0L I6
6-speed manual RWD
not as reliable
2008 4dr Wagon turbocharged 240hp 2.0L I4
8-speed shiftable automatic RWD
Poorer reputation than Lexus based on internet research. Stock run flat tires have short life and rough ride. Lack of spare limits options
2008 2dr Coupe turbocharged 425hp 3.0L I6
6-speed manual RWD
I have never had major problems with my BMW's, but I have never kept them out of warranty either. M cars are ridiculously expensive to repair. The only car company where the coolant is designed to outlast the radiator. When they break, they brea
2008 2dr Hardtop conv. turbocharged 240hp 2.0L I4
8-speed shiftable automatic AWD
Possibly expensive repair track record when 4-year warranty end