Audi A6 vs Peugeot 408

Audi A6

Audi’s executive saloon.

Peugeot 408

Peugeot’s sharp-lined fastback crossover.

First car

Second car

Pick this one if…

Audi A6

Pick the A6 for quattro, the 530-litre boot and the frugal 2.0 TDI — but the climate controls are touchscreen-only.

Best engine: The mid-range 2.0 TDI diesel for the best balance of economy and torque — or the 2.0 TFSI petrol.

Read the full guide

Pick this one if…

Peugeot 408

Pick the 408 for a striking fastback crossover with a modern interior and an electric option.

Best engine: The 1.2 Hybrid (136/145) or the e-408 for full electric.

Read the full guide

Performance

EA888 45 TFSI · Petrol vs 1.2 PureTech 130 · Petrol

	Audi A6	Peugeot 408
Power	245 hp Winner	130 hp
Torque	370 Nm Winner	230 Nm
0–100 km/h	6,0 s Winner	10,5 s
Top speed	250 km/h Winner	200 km/h
Power-to-weight	148,5 hp/t Winner	92,9 hp/t
CO₂ emissions (WLTP)	160 g/km	120 g/km Winner
Consumption (WLTP)	7,1 L/100km	5,5 L/100km Winner

Dimensions & space

	Audi A6	Peugeot 408
Boot	530 L	536 L Winner
Boot (seats folded)	—	1.611 L
Wheelbase	2,92 m Winner	2,79 m
Length	4,94 m	4,69 m
Width	1,89 m	1,85 m
Height	1,46 m	1,48 m
Seats	5	5

Powertrain & tech

	Audi A6	Peugeot 408
Platform	MLB Evo (longitudinal)	EMP2 (modular)
Drive	Front-wheel drive · All-wheel drive	Front-wheel drive
Engine family	EA888 petrol · EA288 diesel · plug-in hybrid	1.2 PureTech · 1.2 Hybrid (48V) · 1.6 PHEV · e-408
Fuel	Petrol · Diesel · Plug-in hybrid	Petrol · Plug-in hybrid · Electric
Transmission	7-speed S tronic (DSG)	6-speed manual · e-DSC6 · EAT8 · single-speed
Euro standard	Euro 6d-TEMP (early) · Euro 6d (later)	Euro 6/6d · N/A (e-408)
LEZ access	Euro 6 diesel allowed in the LEZ (Brussels/Antwerp/Ghent)	Euro 6/6d petrol and the e-408 allowed in the LEZ

Reliability & watch-outs

Known issues

Audi A6

S tronic (DSG) mechatronics are the best-known weak point, especially on diesels
EA288 diesels: AdBlue/SCR needs attention with mainly short trips
Direct-injection TFSI petrols: carbon buildup with lots of short trips

Peugeot 408

1.2 PureTech (early): wet timing belt
PHEV/EV: check battery and charger condition
Infotainment software needs updates

Pros

Audi A6

quattro optional — standard on the 3.0-litre engines
530-litre boot
48V mild-hybrid standard on most engines

Peugeot 408

Striking fastback design
Modern i-Cockpit interior
Electric e-408 available

Cons

Audi A6

Touchscreen-only climate controls (no physical buttons)
S tronic/tiptronic only — no manual gearbox

Peugeot 408

No diesel offered
Boot smaller than classic saloons

Driving experience

Audi A6

As a model line, the A6 steers accurately with light, consistent weighting and stays quiet at motorway speeds. Front-drive versions feel light and easy; quattro adds strong traction out of corners (standard on 3.0-litre engines, optional on 2.0-litre models). The 2.0 TDI is strong and frugal, the 45 TFSI is smooth, and the 3.0 TFSI is genuinely quick. The S tronic shifts quickly. It is tuned for comfort over sharp handling.