Audi A6
C8 (2019–present)
The A6 is Audi’s core midsize luxury sedan. Several years — especially early C5/C6 pain years and 2019 C8 BSG failures — are expensive to own, while 2008–2010 and 2017–2018 are the cleaner used windows.
- ReliabilityMixedYear-dependent
- Ownership cost$$$Luxury sedan
- Insurance$$Moderate–high
- Repair difficultyHardComplex systems
- Typical lifespanLong if maintainedPPI critical
Generations
- C51998–2004
- C62005–2011
- C72012–2018
- C82019–presentCurrent
At a glance
- Worst years
- 2000, 2005, 2012, 2019
- Best years
- 2008, 2009, 2010, 2017, 2018
- Best powertrain
- Late C6 / late C7
- Avoid risk
- 2019 BSG / early oil issues
- Recommended tire
- Michelin Pilot Sport All Season 4
- Must check
- Oil level + electrical/BSG
Years to avoid
Skip 2000, 2005, 2012, and 2019 for the highest complaint and repair-cost pain. Prefer 2008–2010 or 2017–2018 with documented maintenance.
- Drivetrainquattro AWD common
- SegmentMidsize luxury
Engines
Which powertrains hold up — and which to walk away from.
- Year-dependent
Various TFSI / V6 / mild-hybrid
Across generations
Strong when you buy the right year — 2019 BSG failures and early oil issues dominate the skip list.
Transmissions
- Mixed
Multitronic / S-tronic / Tiptronic (by year)
Various
Transmission type varies by year — verify service history and shift quality on a PPI.
Ownership metrics
- Top failure theme
- BSG / oil / electronicsEspecially 2019 and early years.
- Safer window
- 2008–2010, 2017–2018Best years in the guide.
- Cross-shop
- BMW 5 Series / A4 / A7Same budget band.
- Must check
- Oil + electrical PPINon-negotiable.
Factory tire sizes
| Size | Years / trims | Best all-season | Shop |
|---|---|---|---|
| 245/45R18 | Common OE Many mid trims |  Performance all-season pick for A6 daily driving. | Live prices |
| 255/40R19 | Higher packages Large-wheel options | Performance all-season pick for A6 daily driving. | Live prices |
Recommended tires
Recalls
Various generation campaigns
Multiple
Always run the VIN through NHTSA before buying any used A6.
Check recalls
Maintenance
| Interval | Service |
|---|---|
| Pre-purchase | Oil level / consumption check Critical on older TFSI years. |
| Pre-purchase | BSG / charging system test on 2019+ C8 watchpoint. |
| Per schedule | Oil changes with correct spec |
| Per schedule | Timing chain / carbon cleaning as applicable Generation-dependent. |
Should you buy one?
Buy 2008–2010 or 2017–2018. Skip 2000, 2005, 2012, and 2019 unless price and PPI justify the risk.