Audi A4 vs Peugeot 508

Audi A4

Audi’s compact executive saloon.

Peugeot 508

Peugeot’s executive fastback saloon.

First car

Second car

Pick this one if…

Audi A4

Pick the A4 for quattro, the frugal 2.0 TDI and the 480-litre boot.

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 508

Pick the 508 for a stylish, comfortable executive fastback with strong diesels and PHEV options.

Best engine: The 1.6 PureTech (petrol) or 2.0 BlueHDi (diesel) — post-2023.

Read the full guide

Performance

EA888 40 TFSI · Petrol vs 1.6 PureTech 225 · Petrol

	Audi A4	Peugeot 508
Power	190 hp	225 hp Winner
Torque	320 Nm Winner	300 Nm
0–100 km/h	7,3 s	7,3 s
Top speed	240 km/h	250 km/h Winner
Power-to-weight	129,3 hp/t	158,5 hp/t Winner
CO₂ emissions (WLTP)	137 g/km Winner	140 g/km
Consumption (WLTP)	6,0 L/100km	6,0 L/100km

Dimensions & space

	Audi A4	Peugeot 508
Boot	480 L	487 L Winner
Boot (seats folded)	—	1.537 L
Wheelbase	2,82 m Winner	2,79 m
Length	4,73 m	4,75 m
Width	1,84 m	1,86 m
Height	1,43 m	1,40 m
Seats	5	5

Powertrain & tech

	Audi A4	Peugeot 508
Platform	MLB Evo (longitudinal)	PF3 (W23) · EMP2 (R83)
Drive	Front-wheel drive · All-wheel drive	Front-wheel drive · All-wheel drive
Engine family	EA888 petrol · EA288 diesel · plug-in hybrid	1.2 PureTech · 1.6 THP/PureTech · 1.5/2.0 BlueHDi · Hybrid/PSE
Fuel	Petrol · Diesel · Plug-in hybrid	Petrol · Diesel · Plug-in hybrid
Transmission	7-speed S tronic (DSG)	6-speed manual · EAT6/EAT8 automatic
Euro standard	Euro 6 (early) · Euro 6d-TEMP (later)	Euro 5/6 (W23) · Euro 6/6d (R83)
LEZ access	Euro 6 diesel allowed in the LEZ (Brussels/Antwerp/Ghent)	Euro 6/6d petrol/diesel and PHEV allowed in the LEZ

Reliability & watch-outs

Known issues

Audi A4

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 508

1.6 THP/PureTech (early): timing chain
1.5 BlueHDi: AdBlue and chain on early units
2.2 HDi (W23): bi-turbo needs checking

Pros

Audi A4

quattro optional on the 2.0-litre engines
2.0 TDI (40) returns ~4.3 l/100 km
480-litre boot

Peugeot 508

Stylish fastback design
Comfortable and quiet
Strong diesels and PHEV options

Cons

Audi A4

Automatic only on later models — early pre-facelift versions have rare manual options
S line suspension rides firmly on large wheels

Peugeot 508

Boot smaller than classic saloons
Low driving position

Driving experience

Audi A4

As a model line, the A4 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 on the 2.0-litre engines. The 2.0 TDI is strong and frugal, the 2.0 TFSI is smooth, and the 40 TFSI e plug-in hybrid runs on electric for short trips. The S tronic shifts quickly. It leans toward comfort over sharp handling.