Audi A4: which years to buy, and what breaks on them
Best and worst years of the Audi A4
Of the 27 model years of the Audi A4 that carry enough owner reports to score, 2016 comes out best at 56 out of 100 and 2021 worst at 80. The scores rank each year against other cars of the same model year, so an older one is not penalised for having had longer to break.
3,677 owner reports across 29 model years, 1,950 of them carrying an odometer reading. 27 years carry enough reports to score.
The year to buy, and the year to avoid
Both figures are ranks against other vehicles of the same model year, so the two are comparable even when the years are a decade apart. Each links to that year's full report.
2016 Audi A4
Best of 29 years on 18 owner reports, its own worst problem being other engine problem. Evidence behind the score: low confidence.
2021 Audi A4
Risk 80 of 100 from 19 reports, worst problem airbag failed to deploy in a crash.
Severe Low confidence confidence
How much the year actually matters
The gap between the best and worst year is 24 points on a 100-point scale, which is wide enough to be worth acting on when two cars are otherwise comparable.
Across every year of the Audi A4, owners have filed 3,677 reports with NHTSA. The 2006 accounts for the largest share at 343, which can mean a genuinely troublesome year or simply the year that sold best and has been on the road longest.
What tends to break across the Audi A4
Taking the most-reported failure from each model year, the recurring problems on the Audi A4 are other engine problem (worst mode in 5 years), airbag inflator rupture (worst mode in 5 years) and aBS module or sensor failure (worst mode in 3 years). A fault that heads the list in most years is characteristic of the design; one that heads a single year is usually a batch or a supplier.
Every model year, scored
Shorter is better, and the outlined row is the best year of the line. A year with too few reports to score is shown without a bar rather than as a zero, because no data is not the same as no problems.
| Year | Reports | Per 1,000 | Median report | Most reported problem | Recalls | Risk | Confidence |
|---|---|---|---|---|---|---|---|
| 1996 Audi A4 | 133 | 9.3 | 68k | Control arm, ball joint or bushing failure | 6 | 62 | High confidence |
| 1997 Audi A4 | 119 | 8.3 | 92k | Ignition switch, key fob or immobilizer failure | 8 | 68 | High confidence |
| 1998 Audi A4 | 321 | 32.8 | 82k | ABS module or sensor failure | 6 | 69 | High confidence |
| 1999 Audi A4 | 242 | 14.6 | 75k | ABS module or sensor failure | 7 | 68 | High confidence |
| 2000 Audi A4 | 115 | 8.6 | 62k | ABS module or sensor failure | 5 | 66 | High confidence |
| 2001 Audi A4 | 153 | 19.5 | 60k | Other engine problem | 3 | 68 | High confidence |
| 2002 Audi A4 | 218 | 27.8 | 22k | Misfire or rough idle | 2 | 74 | High confidence |
| 2003 Audi A4 | 282 | 15.2 | 63k | Fuel pump failure | 4 | 72 | High confidence |
| 2004 Audi A4 | 225 | 13.9 | 59k | Fuel pump failure | 3 | 68 | High confidence |
| 2005 Audi A4 | 267 | 16.5 | 59k | Airbag inflator rupture | 4 | 65 | High confidence |
| 2006 Audi A4 | 343 | 21.2 | 61k | Airbag inflator rupture | 3 | 66 | High confidence |
| 2007 Audi A4 | 226 | 13.9 | 73k | Airbag inflator rupture | 3 | 71 | High confidence |
| 2008 Audi A4 | 204 | 12.6 | 62k | Airbag inflator rupture | 4 | 73 | High confidence |
| 2009 Audi A4 | 150 | 89.8 | 62k | Airbag inflator rupture | 2 | 78 | High confidence |
| 2010 Audi A4 | 77 | 5.5 | 79k | Excessive oil consumption | 0 | 73 | Moderate confidence |
| 2011 Audi A4 | 17 | 1.2 | 106k | Excessive oil consumption | 0 | 64 | Low confidence |
| 2012 Audi A4 | 23 | 1.7 | 115k | Timing chain, belt or tensioner failure | 0 | 66 | Low confidence |
| 2013 Audi A4 | 28 | 2.0 | 101k | Other steering problem | 0 | 65 | Moderate confidence |
| 2014 Audi A4 | 38 | 2.7 | 81k | Other engine problem | 0 | 60 | Moderate confidence |
| 2015 Audi A4 | 24 | 1.7 | 42k | Airbag failed to deploy in a crash | 0 | 67 | Low confidence |
| 2016 Audi A4 | 18 | 1.3 | 45k | Other engine problem | 0 | 56 | Low confidence |
| 2017 Audi A4 | 75 | 5.4 | 37k | Water pump failure | 1 | 68 | High confidence |
| 2018 Audi A4 | 80 | 5.8 | 98k | Other engine problem | 1 | 68 | High confidence |
| 2019 Audi A4 | 16 | 1.2 | 92k | Loss of braking | 1 | 67 | Low confidence |
| 2020 Audi A4 | 231 | 16.6 | 49k | Backup camera failure | 3 | 70 | High confidence |
| 2021 Audi A4 | 19 | 2.8 | 3k | Airbag failed to deploy in a crash | 4 | 80 | Low confidence |
| 2022 Audi A4 | 10 | 46.1 | 13k | Transmission slipping | 3 | not rated | Unrated |
| 2023 Audi A4 | 19 | 1.4 | 38k | Lane keep or steering assist fault | 0 | 68 | Low confidence |
| 2024 Audi A4 | 4 | 0.3 | — | Other engine problem | 0 | not rated | Unrated |
What each column means
Reports counts owner complaints filed with NHTSA against that model year. Filing is voluntary and unverified, so the count is a floor on how often something went wrong, never a census. It also rises with how many cars were sold, which is why the next column exists.
Per 1,000 divides those reports by an estimate of how many of that model year are on the road, so a common car and a rare one can be compared. The estimate comes from the vehicle counts in recall campaigns covering the same model year, which is the only per-model fleet figure published free of charge; where no recall covers a year, this column is blank rather than guessed.
Median report is the odometer reading at the midpoint of that year's reports: half of the readings owners gave were below it. It is a description of when problems get reported, not a prediction of when this car will break, and it needs at least eight readings before it is shown at all.
Risk is a 0–100 score combining how often reports arrive relative to fleet size, how serious they are, and how early they land, ranked against other vehicles of the same model year only. Confidence says how much evidence sits behind it: a low score on thin evidence is a shrug, not a clean bill of health. Both are defined in full on the methodology page.
Generations, and why the boundary matters
The Audi A4 splits into generations: 1996–2004 (best 1996, worst 2002), 2005–2009 (best 2005, worst 2009), 2010–2012 (best 2011, worst 2010), 2013–2016 (best 2016, worst 2015), 2017–2020 (best 2019, worst 2020) and 2021–2024 (best 2023, worst 2021). Comparing years inside one generation is the fair comparison — same body, same engines, usually the same suppliers.
Generation boundaries here are inferred from the pattern of model years in the data rather than taken from manufacturer documentation, so they are occasionally a year out. Where a boundary matters to a purchase, check it against the build date on the car.
| Generation | Years | Best year | Worst year | Spread |
|---|---|---|---|---|
| 1996-2004 | 1996–2004 | 1996 Audi A4 62 | 2002 Audi A4 74 | 12 |
| 2005-2009 | 2005–2009 | 2005 Audi A4 65 | 2009 Audi A4 78 | 13 |
| 2010-2012 | 2010–2012 | 2011 Audi A4 64 | 2010 Audi A4 73 | 9 |
| 2013-2016 | 2013–2016 | 2016 Audi A4 56 | 2015 Audi A4 67 | 11 |
| 2017-2020 | 2017–2020 | 2019 Audi A4 67 | 2020 Audi A4 70 | 3 |
| 2021-2024 | 2021–2024 | 2023 Audi A4 68 | 2021 Audi A4 80 | 12 |
How to use this page
The honest way to read a table like this is worst-first: rule out the years with high scores and heavy complaint volume, then choose among the rest on condition, history and price. A low score is not a promise, and a high one is not a verdict on the specific car in front of you.
Every figure comes from owner complaints filed with NHTSA and from recall records, both voluntary in the sense that nobody audits them for completeness. Counts are floors. The AtWhatMileage methodology page sets out each formula.
Questions this page answers
What is the best year for the Audi A4?
Of the model years we can rate, 2016 Audi A4 scores best at 56 out of 100, based on 18 owner reports. 2021 scores worst at 80.
Which years of the Audi A4 should you avoid?
2021 has the highest risk score in this model line at 80 out of 100. The scores compare each year against other vehicles of the same model year, so they are not affected by age alone.
How the generations are drawn. NHTSA does not publish generation boundaries, so ours are inferred from breaks in the recall and complaint record and from the model's own year range. They are close to the enthusiast consensus but not authoritative — if a boundary looks wrong for a car you know well, tell us and we will fix the table rather than argue with you.
Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt Published by AtWhatMileage How every figure is computed