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Audi A4 / S4 / RS4 vs. Infiniti G Reliability

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Results are for year ending March 31, 2016. Only successfully completed repairs are currently included in the analysis. Routine maintenance, most wear items, recalls, and problems fixed with just a reflash or warning light reset are not included.
Year Make/Model Repair Trips Per 100 Cars Compared to all models for the same year    
2015 Audi A4 / S4 21
30.7453416149% 30.7453416149% Fewest Trips Most Trips
[?] see reported repairs
  34 A4 / S4s, 8.5 months of data per A4 / S4, average 9100 miles

 

2014 Audi A4 / S4 22
28.8571428571% 28.8571428571% Fewest Trips Most Trips
[?] see reported repairs
  56 A4 / S4s, 9.9 months of data per A4 / S4, average 17500 miles

 

2013 Audi A4 / S4 41
56.6666666667% 56.6666666667% Fewest Trips Most Trips
[?] see reported repairs
  109 A4 / S4s, 9.7 months of data per A4 / S4, average 31600 miles

Refreshed for this model year.
2013 Infiniti G 16
9.04761904762% 9.04761904762% Fewest Trips Most Trips
[?] see reported repairs
  40 Gs, 7.7 months of data per G, average 22500 miles

 

2012 Audi S4 32
35.7142857143% 35.7142857143% Fewest Trips Most Trips
[?] see reported repairs
  55 S4s, 8.9 months of data per S4, average 41000 miles
2012 Audi A4 35
41.0714285714% 41.0714285714% Fewest Trips Most Trips
[?] see reported repairs
  36 A4s, 9.6 months of data per A4, average 46800 miles
2012 Infiniti G 13
1.78571428571% 1.78571428571% Fewest Trips Most Trips
[?] see reported repairs
  42 Gs, 8.7 months of data per G, average 39300 miles

 

2011 Audi A4 31
29.1836734694% 29.1836734694% Fewest Trips Most Trips
[?] see reported repairs
  39 A4s, 8.9 months of data per A4, average 60400 miles

Multiple reports of mechatronics problems with the S4's DSG transmission. Multiple reports of excessive oil consumption for the 2.0T engine. Some engines rebuilt with updated piston rings.
2011 Audi S4 61
78.1632653061% 78.1632653061% Fewest Trips Most Trips
[?] see reported repairs
  48 S4s, 8.6 months of data per S4, average 54900 miles

Multiple reports of mechatronics problems with the S4's DSG transmission. Multiple reports of excessive oil consumption for the 2.0T engine. Some engines rebuilt with updated piston rings.
2011 Infiniti G 17
6.32653061224% 6.32653061224% Fewest Trips Most Trips
[?] see reported repairs
  56 Gs, 9.8 months of data per G, average 51400 miles

 

2010 Audi S4 61
65.7142857143% 65.7142857143% Fewest Trips Most Trips
[?] see reported repairs
  55 S4s, 9.6 months of data per S4, average 57000 miles

Multiple reports of excessive oil consumption for the 2.0T engine. Some engines rebuilt with updated piston rings. Some recent reports of mechatronics repairs with the DSG transmission in the S4, but less common recently than in the past.
2010 Audi A4 64
70% 70% Fewest Trips Most Trips
[?] see reported repairs
  27 A4s, 9.0 months of data per A4, average 67700 miles

Multiple reports of excessive oil consumption for the 2.0T engine. Some engines rebuilt with updated piston rings. Some recent reports of mechatronics repairs with the DSG transmission in the S4, but less common recently than in the past.
2010 Infiniti G 22
10% 10% Fewest Trips Most Trips
[?] see reported repairs
  36 Gs, 9.3 months of data per G, average 68100 miles

 

2009 Audi A4 3.2 53
36.8131868132% 36.8131868132% Fewest Trips Most Trips
[?] see reported repairs
  31 A4 3.2s, 9.5 months of data per A4 3.2, average 67700 miles

First model year of the B8 A4. Multiple reports of excessive oil consumption for the 2.0T engine. Some engines rebuilt with updated piston rings.
2009 Audi A4 2.0T 68
53.2967032967% 53.2967032967% Fewest Trips Most Trips
[?] see reported repairs
  28 A4 2.0Ts, 9.4 months of data per A4 2.0T, average 74100 miles

First model year of the B8 A4. Multiple reports of excessive oil consumption for the 2.0T engine. Some engines rebuilt with updated piston rings.
2009 Infiniti G 31
12.6373626374% 12.6373626374% Fewest Trips Most Trips
[?] see reported repairs
  62 Gs, 10.5 months of data per G, average 64900 miles

 

2008 Audi A4 77
63.1868131868% 63.1868131868% Fewest Trips Most Trips
[?] see reported repairs
  42 A4s, 9.2 months of data per A4, average 84500 miles
2008 Audi S4 / RS4   small sample, members only   see reported repairs
  10 S4 / RS4s, 8.3 months of data per S4 / RS4, average 73000 miles

* Very small sample, members only.
2008 Infiniti G 27
8.24175824176% 8.24175824176% Fewest Trips Most Trips
[?] see reported repairs
  67 Gs, 9.1 months of data per G, average 81900 miles

Coupe redesigned for this model year.

 

2007 Audi S4 / RS4   small sample, members only   see reported repairs
  18 S4 / RS4s, 9.1 months of data per S4 / RS4, average 70500 miles

* Small sample, members only.
2007 Audi A4 84
65.8441558442% 65.8441558442% Fewest Trips Most Trips
[?] see reported repairs
  40 A4s, 9.3 months of data per A4, average 92000 miles
2007 Infiniti G sedan 39
19.0909090909% 19.0909090909% Fewest Trips Most Trips
[?] see reported repairs
  40 G sedans, 9.3 months of data per G sedan, average 99200 miles

Sedan redesigned for this model year.

 

2006 Audi S4   small sample, members only   see reported repairs
  11 S4s, 8.4 months of data per S4, average 94500 miles

* Very small sample, members only.
2006 Audi A4 96
73.1527093596% 73.1527093596% Fewest Trips Most Trips
[?] see reported repairs
  65 A4s, 8.7 months of data per A4, average 111000 miles

Includes 2005.5. First model year of the B7 A4.
2006 Infiniti G 64
41.6256157635% 41.6256157635% Fewest Trips Most Trips
[?] see reported repairs
  57 Gs, 9.2 months of data per G, average 97600 miles

 

2005 Audi S4   small sample, members only   see reported repairs
  13 S4s, 8.7 months of data per S4, average 86000 miles

* Very small sample, members only.
2005 Audi A4   small sample, members only   see reported repairs
  15 A4s, 9.5 months of data per A4, average 120200 miles

* Small sample, members only.
2005 Infiniti G 72
42.8571428571% 42.8571428571% Fewest Trips Most Trips
[?] see reported repairs
  27 Gs, 9.3 months of data per G, average 122400 miles

 

2004 Audi S4   small sample, members only   see reported repairs
  12 S4s, 9.2 months of data per S4, average 83500 miles

* Very small sample, members only.
2004 Audi A4   small sample, members only   see reported repairs
  21 A4s, 9.7 months of data per A4, average 129900 miles

* Small sample, members only.
2004 Infiniti G 62
30.6722689076% 30.6722689076% Fewest Trips Most Trips
[?] see reported repairs
  46 Gs, 9.7 months of data per G, average 106700 miles

 

2003 Audi A4 100
51.8315018315% 51.8315018315% Fewest Trips Most Trips
[?] see reported repairs
  25 A4s, 8.7 months of data per A4, average 143500 miles
2003 Infiniti G 47
13.0036630037% 13.0036630037% Fewest Trips Most Trips
[?] see reported repairs
  38 Gs, 9.4 months of data per G, average 110200 miles

 

2002 Audi A4 89
43.7728937729% 43.7728937729% Fewest Trips Most Trips
[?] see reported repairs
  28 A4s, 9.2 months of data per A4, average 157800 miles

First model year of the B6 A4, very high repair frequency. S4 still B5.

 

2001 Audi A4 / S4   small sample, members only   see reported repairs
  11 A4 / S4s, 6.9 months of data per A4 / S4, average 115300 miles

* Very small sample, members only.

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Audi A4 / S4 / RS4 vs. Infiniti G Reliability Comparisons

You won't find Audi A4 / S4 / RS4 or Infiniti G 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 Infiniti G truly differ in reliability.

These stats are promptly updated four times a year, to much more closely track Audi A4 / S4 / RS4 and Infiniti G reliability as the cars age. Others tell you how reliable the Audi A4 / S4 / RS4 and the Infiniti G 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 Infiniti G have been recently.

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
2013 4dr Sedan turbocharged 211hp 2.0L I4
8-speed shiftable CVT FWD
This Car is like a bad Girlfriend, Very Exciting, take her places, give her status, give her lots of money, Lots. And give her love, lots of Love ... and she just won't love you back. Two complete engine failures due to rings. And this car was maintained meticulously with 5w-30w Synthetic Oil . Complete engine Replacement at 89,000 miles due to piston ring failure in Cyl. #4. $9,000 Complete engine Replacement AGAIN at 116,000 due to Piston Ring Failure in Cyl. #2. This is a 2013 car. 3 years old. 2.0 Turbo Engine A new Audi crate engine is about $7,200 just for the engine. Then of course there is dealer labor and add ons. Just now quoted at $3,700 labor. You do the math. Here is the double cool part. A factory engine in a factory car has a 50,000 mile warranty. A factory engine installed by the Audi technician at an Audi Dealership, 12,000 mile warranty. If I was racing this car on the track I could accept those kinds of engine failure numbers. But I'm an "old guy" just doing average city and freeway driving. It appears I am not alone, http://www.telegraph.co.uk/motoring/news/9815860/German-cars-lose-out-in-reliability-survey.html Warranty Direct underwriters did the engine failure rate survey by Brand
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2010 4dr Wagon turbocharged 211hp 2.0L I4
6-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 turbocharged 200hp 2.0L I4
6-speed manual AWD
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 255-horsepower 3.1L V6
6-speed manual AWD
So far, perfect
2006 4dr Sedan turbocharged 200hp 2.0L I4
6-speed shiftable automatic AWD
Like that I can drive an Audi for 6+ years/100k+ miles and still feel safe.
2006 4dr Sedan turbocharged 200hp 2.0L I4
6-speed shiftable automatic 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 220-horsepower 3.0L V6
5-speed shiftable automatic AWD
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
5-speed manual AWD
120k miles + and counting, no major issues
Audi A4 / S4 / RS4 Reliability and Durability: Cons
YearBody/PowertrainComment
2013 4dr Sedan turbocharged 211hp 2.0L I4
8-speed shiftable CVT FWD
This Car is like a bad Girlfriend, Very Exciting, take her places, give her status, give her lots of money,Lots. And give herlove, lots of Love ... and she just won't love you back. Two complete engine failures due to rings. And this car was maintained meticulously with 5w-30w Synthetic Oil. Complete engine Replacement at 89,000 miles due to piston ring failure in Cyl. #4. $9,000 Complete engine Replacement AGAIN at 116,000 due to Piston Ring Failure in Cyl. #2. This is a 2013 car. 3 years old. 2.0 Turbo Engine A new Audi crate engine is about $7,200 just for the engine. Then of course there is dealer labor and add ons. Just now quoted at $3,700 for labor. You do the math. If I was racing this car on the track I could accept those kinds of engine failure numbers. But I'm an "old guy" just doing average city and freeway driving. It appears, I'm not alone http://www.telegraph.co.uk/motoring/news/9815860/German-cars-lose-out-in-reliability-survey.html Warranty Direct underwriters did the survey of engine failure by brand.
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2012 4dr Sedan supercharged 333hp 3.0L V6
7-speed automated manual AWD
Thermostat failed at 36,000 miles. Appears to be a common issue based on what I've read.
2010 4dr Sedan turbocharged 211hp 2.0L I4
6-speed shiftable automatic AWD
Very expensive to fix and not with the same history of reliability as Benz.
2007 4dr Sedan turbocharged 200hp 2.0L I4
6-speed shiftable automatic 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 turbocharged 200hp 2.0L I4
6-speed shiftable automatic AWD
Not reliable, lots of dealer visits,
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 $10,000 to fix. I had to sell this car at a loss. What a waste!
2006 4dr Sedan turbocharged 200hp 2.0L I4
6-speed shiftable automatic AWD
Expensive to maintain, constant repairs. 2500$ service bill (excluding oil changes) avg. per year to keep road-worthy.
2005 4dr Sedan turbocharged 170hp 1.8L I4
5-speed shiftable automatic AWD
In the shop 10 times during last seven months. Towed 4 times because not drivable
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.
2004 4dr Sedan turbocharged 170hp 1.8L I4
5-speed shiftable automatic AWD
Reputation for mechanical problems and expensive repairs
 

What Our Members Are Saying about the Reliability and Durability of the Infiniti G

Infiniti G Reliability and Durability: Pros
YearBody/PowertrainComment
2010 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD
Despite the high-performance, the G is rated above-average, same as our G35 - which has only been in for routine maintenance (and a couple of recalls). The old G35 only parts needing replacements in 7 years were the two clock bulbs.
2009 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic RWD
Never had a problem in 25k miles of owning original G35, and reviews of G37 show similar results.
2009 4dr Sedan 328-horsepower 3.7L V6
7-speed shiftable automatic AWD
39 months with no repairs.
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
Replaced all 4 wheel bearings in one year :( Not sure what this would be from. Went to dealer to ask and they didn't have any TSB's on it. Not uncommon to have one go - but not all 4 in abou 5 mos. Suspect a local repair shop over torqued wheels - but no proof.
2008 2dr Coupe 330-horsepower 3.7L V6
6-speed manual RWD
very reliable
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic RWD
So far, so good. Infiniti has a great reputation for long term reliability.
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
Infiniti sedans have been reliable and a major reason I purchased it.
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
I have now owned 4 Infinitis. THey are well made
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
Reliability was listed as above average and have owned other Nissan products that were reliable.
2007 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
Good reputation
Infiniti G Reliability and Durability: Cons
YearBody/PowertrainComment
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic RWD
It has been in the shop for warranty work 2 times already.
2008 2dr Coupe 330-horsepower 3.7L V6
5-speed shiftable automatic RWD
Within my two year lease of my vehicle it has been brought it countless times for repair. Exhaust on the car was faulty and needed to be replaced twice. Apparently something was wrong with the resonators and it made a hideous metal pinging noise.
2008 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
aforementioned wheel bearing issues.
2005 2dr Coupe 298-horsepower 3.5L V6
6-speed manual RWD
CU rated the G35 less than the Honda Accord in this area
2003 4dr Sedan 260-horsepower 3.5L V6
5-speed shiftable automatic RWD
Brakes, stereo, electrical system, seats, wipers etc have required more frequent repair than expected. In some cases you have no choice but to replace the defective component with a stock part which again fails after a similar length of time, kind of a vi