Audi · Sedan · 2004–2011
Audi A6 C6 Limousine
Weaknesses, engine ratings and buying advice
★★★★★
2.0 / 5.0 · Based on 16 engine variants Most Fun Engine
579 PS
5.0L V10 BiTurbo Benzin
580 hp V10 BiTurbo saloon — ten cylinders, zero restraint
Legendary! Most Reliable Engine
170–177 PS
2.4L V6 Benzin
6 weaknesses
Good Choice Problem Engine
435–570 PS
5.2L V10 FSI Benzin
11 weaknesses
Stay Away!Engine Overview
The Audi A6 C6 Limousine is available with 11 engine variants — from 136 to 579 hp.
2.0L TDI Engine Change
2004 2008
Stay Away! 5 weaknesses
2008 2011
Stay Away! 5 weaknesses
2.7L TDI V6 Engine Change
2004 2011
Be Careful 5 weaknesses
2004 2008
Be Careful 5 weaknesses
3.0L TDI V6 Engine Change
2004 2011
Stay Away! 7 weaknesses
2004 2009
Stay Away! 5 weaknesses
2.0L TFSI
2005 2011
Stay Away! 5 weaknesses
2.4L V6
2004 2008
Good Choice 6 weaknesses
2.8L FSI V6 Engine Change
2004 2011
Be Careful 6 weaknesses
2006 2011
Be Careful 5 weaknesses
2008 2011
Stay Away! 6 weaknesses
3.0L V6 30V
2004 2008
Be Careful 7 weaknesses
3.2L FSI V6
2004 2008
Stay Away! 6 weaknesses
4.2L FSI V8
2006 2011
Stay Away! 8 weaknesses
RS6
2008 2010
Be Careful 6 weaknesses
S6
2006 2011
Stay Away! 11 weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Multitronic CVT Gearbox Failure The continuously variable Multitronic gearbox (01J/0AW) is considered the most serious weakness. Judder, rev fluctuations and complete failure. Early build years up to 2007 are particularly badly affected. Symptoms: Severe judder when pulling away, uncontrolled rev spikes, PRND display flashing, no reverse gear, limp mode from 100,000 km | High | |
| Multitronic CVT Gearbox Failure The Multitronic CVT tends to judder when pulling away, rpm fluctuations at partial load and, in the worst case, complete failure. All front-wheel-drive models are affected. Symptoms: Noticeable juddering when pulling away, flashing gearbox indicator in instrument cluster, rpm fluctuations; limp-mode driving still possible from 120,000 km | High |
Frequently Asked Questions
What problems and weaknesses does the Audi A6 C6 Limousine have? +
The Audi A6 C6 as Limousine has 110 known weaknesses, 12 vehicle-related.
Which engine is recommended? +
Good Choice: BDW (2.4L V6).
Is the Audi A6 C6 Limousine worth buying used? +
Caution is advised with the Audi A6 C6 Limousine — 9 of 16 engine variants are rated 'Stay Away!'.
Last updated: February 2026 · All information without guarantee