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Reliability Database

Audi

Engine Reliability & Known Problems

Based on 9,414 NHTSA complaints. Updated August 2026.

21 Models
174 Engines Rated
43 Generations
9,414 NHTSA Complaints
Engine Ratings Overview
81 recommended 70 caution 23 avoid

Midsize Sedan

4 models
A4/S4
1 generation · 1 engine
2007
1 recommended
A4/S4 Avant
1 generation · 1 engine
2007
1 recommended
A4/S4 Cabriolet
2 generations · 3 engines
20052007
2 recommended 1 caution
A6
4 generations · 22 engines
2000-20042005-20112012-20182019-2025
11 recommended 7 caution 4 avoid

Luxury SUV

3 models
Audi Q4 E-Tron
1 generation · 1 engine
2023
1 caution
Audi Q4 Sportback E-Tron
1 generation · 1 engine
2023
1 caution
Q6 Sportback E-Tron
1 generation · 1 engine
2025
1 caution

Luxury Sedan

2 models
Allroad
4 generations · 8 engines
2001200220032004
5 caution 3 avoid
e-tron GT
1 generation · 1 engine
2022-2026
1 caution

Midsize SUV

2 models
Q7
2 generations · 16 engines
2007-20152017-2025
10 recommended 6 caution
Q8
1 generation · 4 engines
2019-2025
2 recommended 2 caution

Compact

1 model
A3
2 generations · 12 engines
2006-20132015-2020
7 recommended 5 caution

Compact Sedan

1 model
A4
6 generations · 35 engines
200020012002-20052006-20082009-20162017-2025
14 recommended 12 caution 9 avoid

Compact Coupe

1 model
A5
2 generations · 12 engines
2008-20162018-2025
5 recommended 5 caution 2 avoid

Midsize Coupe

1 model
A7
2 generations · 10 engines
2012-20182019-2025
7 recommended 2 caution 1 avoid

Full-Size Sedan

1 model
A8
4 generations · 13 engines
2000-20032004-20102011-20182019-2025
5 recommended 7 caution 1 avoid

Midsize EV SUV

1 model
e-tron
1 generation · 1 engine
2019-2023
1 avoid

Subcompact SUV

1 model
Q3
2 generations · 6 engines
2015-20182019-2025
4 recommended 2 caution

Compact EV SUV

1 model
Q4 e-tron
1 generation · 1 engine
2022-2025
1 caution

Compact SUV

1 model
Q5
2 generations · 16 engines
2009-20172018-2025
10 recommended 6 caution

Sports Car

1 model
TT
2 generations · 9 engines
2000-20062008-2014
2 recommended 5 caution 2 avoid
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