Audi A3 vs Mercedes-Benz A-Class

Audi A3

Audi’s premium compact hatchback.

Mercedes-Benz A-Class

The fourth-generation A-Class on the MFA2 platform.

First car

Second car

Pick this one if…

Audi A3

Pick the A3 if you want a premium-feeling, refined compact hatchback with strong engines — without moving up to a larger Audi.

Best engine: The mid-range 1.5 TFSI petrol for the best everyday balance — or the 2.0 TDI for high mileage.

Read the full guide

Pick this one if…

Mercedes-Benz A-Class

Pick the A-Class for MBUX technology, a refined platform and efficient engines in a premium compact hatchback.

Best engine: The A 200 (petrol) or A 200 d / A 220 d (diesel) — the sweet spot.

Read the full guide

Performance

EA211 evo 35 TFSI · Petrol vs M282 A 200 · Petrol

	Audi A3	Mercedes-Benz A-Class
Power	150 hp	163 hp Winner
Torque	250 Nm	250 Nm
0–100 km/h	8,4 s	8,0 s Winner
Top speed	224 km/h	230 km/h Winner
Power-to-weight	116,3 hp/t Winner	112,8 hp/t
CO₂ emissions (WLTP)	126 g/km Winner	138 g/km
Consumption (WLTP)	5,5 L/100km	5,0 L/100km Winner

Dimensions & space

	Audi A3	Mercedes-Benz A-Class
Boot	380 L Winner	370 L
Boot (seats folded)	1.200 L	1.210 L Winner
Wheelbase	2,64 m	2,73 m Winner
Length	4,34 m	4,42 m
Width	1,82 m	1,80 m
Height	1,45 m	1,44 m
Seats	5	5

Powertrain & tech

	Audi A3	Mercedes-Benz A-Class
Platform	MQB Evo (transverse, shared with the VW Golf VIII)	MFA2 (front-wheel-drive base, shared with the B-Class W247, CLA C118 and GLA H247)
Drive	Front-wheel drive · All-wheel drive	Front-wheel drive · All-wheel drive
Engine family	EA211 evo 1.5 TFSI · EA888 2.0 TFSI · EA288 evo 2.0 TDI · PHEV	M282/M260 petrol · OM654 diesel · plug-in hybrid
Fuel	Petrol · Diesel · Plug-in hybrid	Petrol · Diesel · Plug-in hybrid
Transmission	S tronic (7-speed DSG) · 6-speed manual	7G-DCT / 8G-DCT dual-clutch (no manual)
Euro standard	Euro 6d-TEMP (early) · Euro 6d (later)	Euro 6d-TEMP (early) · Euro 6d (later)
LEZ access	Euro 6 diesel allowed in the LEZ (Brussels/Antwerp/Ghent)	Euro 6 diesel allowed in the LEZ (Brussels/Antwerp/Ghent)

Reliability & watch-outs

Known issues

Audi A3

DQ200 (7-speed dry DSG): mechatronics and clutch judder on lower-output versions
EA888 (2.0 TFSI) petrols: water-pump/thermostat housing and early timing-chain tensioner
Direct-injection petrols: carbon buildup with lots of short trips

Mercedes-Benz A-Class

M282: thermostat/cooling issues and elevated oil consumption reported
M260 (A 250): cylinder-head valve seat wear reported
Early OM654 diesel: rocker arm / camshaft concerns
DCT fluid service recommended early; MBUX software updates

Pros

Audi A3

Premium interior quality for the class
Wide, efficient engine range (petrol, diesel, plug-in hybrid)
Balanced, refined driving manners

Mercedes-Benz A-Class

MBUX dual-screen infotainment
Efficient OM654 diesels
Refined MFA2 platform

Cons

Audi A3

Pricier than a comparable VW Golf on the same platform
Rear seat and boot tighter than some rivals
Firm ride on sport (S line) trims

Mercedes-Benz A-Class

Rear torsion beam on base models
Smaller boot than a typical C-segment hatchback
PHEV shrinks boot space

Driving experience

Audi A3

As a model line, the A3 is a premium compact hatchback that prioritises refinement. The steering is accurate and consistently weighted, the ride is composed, and the cabin stays quiet at motorway speeds. Front-drive versions are light and predictable, while quattro adds reassuring traction in the wet. The petrols are smooth and eager, the diesels strong and frugal, and the plug-in hybrid glides on electric power. It is tuned for comfort more than entertainment, so it feels mature, easy and confidence-inspiring rather than overtly sporty.