Strengths
- MHEV efficiency
- 4.0 TFSI biturbo V8 still
- Wider hips, more aggressive
Weaknesses
- Heavy
- Premium pricing
- No PHEV in UK
Notable tech
- MLB Evo platform (A6 C8 sibling)
- 4.0 TFSI biturbo V8 with 48V MHEV
- Avant body only
- Quattro Torsen
- 8-speed Tiptronic
- Performance edition 621 bhp from 2022
- GT track-focused special 2024
Common issues
- MHEV 48V faults
- Carbon build-up
- MMI freezes pre-2022
- Air suspension wear
Engine derivatives
US-spec trims and engines offered across C8's life. Click any two rows to compare them side-by-side.
Pick two engines to compare
4.0 TFSI MHEV quattro Avant
BHP591
Torque800 Nm
0–603.6 s
Top190 mph
MPG (US)19 mpg
DriveAWD
Gearbox8AT
4.0 TFSI Performance MHEV Avant
BHP621
Torque850 Nm
0–603.4 s
Top190 mph
MPG (US)19 mpg
DriveAWD
Gearbox8AT
RS6 GT Avant (limited 2024)
BHP621
Torque850 Nm
0–603.4 s
Top190 mph
MPG (US)19 mpg
DriveAWD
Gearbox8AT