Audi · Sedan · 2018–2024
Audi A6 C8 Limousine
Weaknesses, engine ratings and buying advice
★★★★★
2.9 / 5.0 · Based on 16 engine variants Most Fun Engine
450 PS
2.9L TFSI V6 BiTurbo Benzin
V6 replaces V8 — quick, efficient, nobody asked for it
Fun to Drive! Most Reliable Engine
230–265 PS
2.0L TFSI Benzin
7 weaknesses
Good Choice Problem Engine
231 PS
3.0L TDI V6 Diesel
6 weaknesses
Stay Away!Engine Overview
The Audi A6 C8 Limousine is available with 10 engine variants — from 136 to 450 hp.
S6
2018 2021
Be Careful 6 weaknesses
2.0L TFSI Engine Change
2018 2024
Good Choice 7 weaknesses
2018 2024
Be Careful 5 weaknesses
3.0L TFSI V6
2018 2024
Be Careful 7 weaknesses
S6
2019 2024
Be Careful 5 weaknesses
50 TFSI e
2021 2023
Be Careful 10 weaknesses
55 TFSI e
2021 2024
Be Careful 9 weaknesses
2.0L TDI Engine Change
2018 2024
Be Careful 5 weaknesses
2018 2024
Be Careful 5 weaknesses
2018 2024
Be Careful 6 weaknesses
3.0L TDI V6 Engine Change
2018 2024
Stay Away! 6 weaknesses
2018 2024
Be Careful 5 weaknesses
2023 2024
Be Careful 5 weaknesses
30 TDI
2019 2024
Be Careful 6 weaknesses
S6 Engine Change
2019 2024
Be Careful 5 weaknesses
2019 2024
Stay Away! 5 weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Recall: Panoramic Roof Can Detach Contamination of the bonding surface during manufacture can cause the rear panoramic roof module to detach. Affects A6 models produced in 2018. Symptoms: Wind noise, leaks at sunroof; in extreme cases rear glass panel detaches at speed | Low | |
| Recall: PHEV Battery Overheating Risk During Charging High-voltage battery cell modules on A6, A7, Q5 PHEV models can overheat during charging (KBA 15722R / code 93AD). 53,449 vehicles worldwide, 17,012 in Germany affected (production period 08/2019–08/2024). Software update takes approx. 60 minutes. Symptoms: Unusual smells or heat generation during charging. | Low |
Frequently Asked Questions
What problems and weaknesses does the Audi A6 C8 Limousine have? +
The Audi A6 C8 as Limousine has 102 known weaknesses, 5 vehicle-related.
Which engine is recommended? +
Good Choice: DMTA (2.0L TFSI).
Is the Audi A6 C8 Limousine worth buying used? +
Caution is advised with the Audi A6 C8 Limousine — 2 of 16 engine variants are rated 'Stay Away!'.
Last updated: February 2026 · All information without guarantee