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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.

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See reliability results for all Sedans, Wagons, and Convertibles.

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Year Make/Model Repair Frequencysuccessful repair trips per 100 cars per year Compared to all models for the same year  
2014 Audi A4 / S4 39 A4 / S4s, 6.1 months of data per A4 / S4, average 5600 miles5
0% Fewest Trips Most Trips
see reported repairs

 

2013 Audi A4 / S4 100 A4 / S4s, 9.6 months of data per A4 / S4, average 13100 miles

Refreshed for this model year.
11
10% Fewest Trips Most Trips
see reported repairs
2013 Infiniti G 26 Gs, 9.5 months of data per G, average 9800 miles10
0% Fewest Trips Most Trips
see reported repairs

 

2012 Audi A4 31 A4s, 9.0 months of data per A4, average 29600 miles26
20% Fewest Trips Most Trips
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2012 Audi S4 45 S4s, 9.3 months of data per S4, average 26700 miles46
60% Fewest Trips Most Trips
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2012 Infiniti G 30 Gs, 9.2 months of data per G, average 20900 miles17
10% Fewest Trips Most Trips
see reported repairs

 

2011 Audi S4 51 S4s, 9.6 months of data per S4, average 38800 miles49
50% Fewest Trips Most Trips
see reported repairs
2011 Audi A4 38 A4s, 9.8 months of data per A4, average 38700 miles55
60% Fewest Trips Most Trips
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2011 Infiniti G 62 Gs, 8.4 months of data per G, average 33300 miles18
10% Fewest Trips Most Trips
see reported repairs

 

2010 Audi A4 32 A4s, 9.2 months of data per A4, average 54800 miles

Multiple reports of excessive oil consumption for the 2.0T engine. Some engines rebuilt with updated valves and piston rings.
37
30% Fewest Trips Most Trips
see reported repairs
2010 Audi S4 58 S4s, 9.4 months of data per S4, average 49700 miles

Multiple reports of excessive oil consumption for the 2.0T engine. Some engines rebuilt with updated valves and piston rings.
53
50% Fewest Trips Most Trips
see reported repairs
2010 Infiniti G 52 Gs, 9.4 months of data per G, average 49000 miles29
20% Fewest Trips Most Trips
see reported repairs

 

2009 Audi A4 2.0T 40 A4 2.0Ts, 10.7 months of data per A4 2.0T, average 56400 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.
56
50% Fewest Trips Most Trips
see reported repairs
2009 Audi A4 3.2 39 A4 3.2s, 9.1 months of data per A4 3.2, average 53000 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.
61
60% Fewest Trips Most Trips
see reported repairs
2009 Infiniti G 58 Gs, 10.0 months of data per G, average 51000 miles23
10% Fewest Trips Most Trips
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2008 Audi A4 42 A4s, 9.5 months of data per A4, average 69300 miles45
30% Fewest Trips Most Trips
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2008 Audi S4 / RS4   10 S4 / RS4s, 9.9 months of data per S4 / RS4, average 53700 miles

* Very small sample size.
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2008 Infiniti G 81 Gs, 9.6 months of data per G, average 70100 miles

Coupe redesigned for this model year.
26
10% Fewest Trips Most Trips
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2007 Audi S4 / RS4   19 S4 / RS4s, 11.2 months of data per S4 / RS4, average 62100 miles

* Small sample size.
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2007 Audi A4 44 A4s, 10.3 months of data per A4, average 80300 miles72
60% Fewest Trips Most Trips
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2007 Infiniti G coupe   12 G coupes, 9.9 months of data per G coupe, average 66100 miles

* Very small sample size.
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2007 Infiniti G sedan 43 G sedans, 10.3 months of data per G sedan, average 80900 miles

Sedan redesigned for this model year.
43
20% Fewest Trips Most Trips
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2006 Audi A4 66 A4s, 8.7 months of data per A4, average 99300 miles

Includes 2005.5. First model year of the B7 A4.
73
50% Fewest Trips Most Trips
see reported repairs
2006 Audi S4   16 S4s, 10.1 months of data per S4, average 76700 miles

* Small sample size.
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2006 Infiniti G 59 Gs, 8.9 months of data per G, average 88800 miles55
30% Fewest Trips Most Trips
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2005 Audi S4   18 S4s, 9.2 months of data per S4, average 78000 miles

* Small sample size.
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2005 Audi A4   17 A4s, 9.0 months of data per A4, average 96700 miles

* Small sample size.
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2005 Infiniti G 33 Gs, 8.3 months of data per G, average 80400 miles61
30% Fewest Trips Most Trips
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2004 Audi S4   21 S4s, 9.8 months of data per S4, average 96400 miles

* Small sample size.
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2004 Audi A4 28 A4s, 9.7 months of data per A4, average 116600 miles115
80% Fewest Trips Most Trips
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2004 Infiniti G 55 Gs, 8.6 months of data per G, average 100400 miles58
20% Fewest Trips Most Trips
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2003 Audi A4   23 A4s, 8.3 months of data per A4, average 132500 miles

* Small sample size.
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2003 Infiniti G 48 Gs, 8.1 months of data per G, average 95400 miles52
10% Fewest Trips Most Trips
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2002 Audi A4 30 A4s, 8.3 months of data per A4, average 148100 miles

First model year of the B6 A4, very high repair frequency. S4 still B5.
202
100% Fewest Trips Most Trips
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2001 Audi A4 / S4   11 A4 / S4s, 11.3 months of data per A4 / S4, average 118500 miles

* Very small sample size.
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2000 Audi A4 / S4   11 A4 / S4s, 8.3 months of data per A4 / S4, average 145600 miles

* Very small sample size.
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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 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 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 255-horsepower 3.1L V6
6-speed manual AWD
So far, perfect
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
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!
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
2003 4dr Wagon turbocharged 170hp 1.8L I4
5-speed manual AWD
The car is not reliable - sensors, electrics, etc.
2002 4dr Sedan turbocharged 250hp 2.7L V6
6-speed manual AWD
The high tech nature of these cars requires somewhat more attention to maintenance.
2002 4dr Sedan 220-horsepower 3.0L V6
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 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 AWD
39 months with no repairs.
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.
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.
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 AWD
I have now owned 4 Infinitis. THey are well made
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.
2007 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
Good reputation
2007 4dr Sedan 306-horsepower 3.5L V6
5-speed shiftable automatic AWD
Online and editor reviews as well as owners comments on websites show the car to be very reliable and seldom has major service issues compared to its competitors
Infiniti G Reliability and Durability: Cons
YearBody/PowertrainComment
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 RWD
It has been in the shop for warranty work 2 times already.
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