Audi A6 C8 Avant
Weaknesses, engine ratings and buying advice
630–640 PS
4.0L TFSI V8 BiTurbo Benzin
600 hp wide-body icon — Instagram star with real substance
Legendary!230–265 PS
2.0L TFSI Benzin
7 weaknesses
Good Choice231 PS
3.0L TDI V6 Diesel
6 weaknesses
Stay Away!Engine Overview
The Audi A6 C8 Avant is available with 12 engine variants — from 136 to 640 hp.
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: Panoramic Roof Bonding Defective On the A6 Avant (MY 2018), the rear glass panel of the panoramic roof was incorrectly bonded. Audi recalled 1,435 vehicles in Germany. Creaking/scraping noises and water ingress are further known issues with the panoramic roof. Symptoms: Creaking or scraping noises from roof area, wind noise from panoramic roof, possible water ingress in rain. | High | |
| 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
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Last updated: February 2026 · All information without guarantee