Audi A4 B9 vs Mercedes-Benz C-Class W206
Audi A4
B9 · 2015 – 2024
The fifth-generation A4 (B9), on the longitudinal MLB Evo platform.
Mercedes-Benz C-Class
W206 · 2021 – 2026
The fifth-generation C-Class on the MRA2 platform.
Audi A4
Pick the A4 for class-leading interior quality, a quiet ride and efficient engines in a premium compact executive sedan.
Mercedes-Benz C-Class
Pick the C-Class for an S-Class-inspired interior, a hushed ride and efficient engines in a premium compact executive sedan.
Performance
EA888 40 TFSI · Petrol vs M254 C 200 · Petrol
| Audi A4 | Mercedes-Benz C-Class | |
|---|---|---|
| Power |
190 hp
|
204 hp
Winner
|
| Torque |
320 Nm
Winner
|
300 Nm
|
| 0–100 km/h |
7,3 s
|
7,3 s
|
| Top speed |
240 km/h
|
246 km/h
Winner
|
| Power-to-weight |
129,3 hp/t
|
129,5 hp/t
Winner
|
| CO₂ emissions (WLTP) |
137 g/km
Winner
|
140 g/km
|
| Consumption (WLTP) |
6,0 L/100km
Winner
|
6,2 L/100km
|
Dimensions & space
| Audi A4 | Mercedes-Benz C-Class | |
|---|---|---|
| Boot |
480 L
Winner
|
455 L
|
| Boot (seats folded) |
—
|
—
|
| Wheelbase |
2,82 m
|
2,87 m
Winner
|
| Length |
4,73 m
|
4,75 m
|
| Ground clearance |
13,0 cm
|
13,0 cm
|
| Turning circle |
11,6 m
|
11,1 m
Winner
|
| Towing capacity (braked) |
1.700 kg
|
1.800 kg
Winner
|
Powertrain & tech
| Audi A4 | Mercedes-Benz C-Class | |
|---|---|---|
| Platform | MLB Evo (longitudinal) | MRA2 (rear-wheel-drive base) |
| Drive | Front-wheel drive · All-wheel drive | Rear-wheel drive · All-wheel drive |
| Engine family | EA888 2.0 TFSI · EA288 2.0 TDI · 40/45 TFSI e PHEV | M254 petrol · OM654 diesel · plug-in hybrid |
| Transmission | 7-speed S tronic | 9-speed 9G-TRONIC |
| Fuel | Petrol | Petrol |
| Euro standard | Euro 6d-TEMP | Euro 6d |
| LEZ access | Unrestricted access (compliant under current legislation) | Unrestricted access (compliant under current legislation) |
Reliability & watch-outs
Known issues
- S tronic (DSG) mechatronics on early 2.0 TDI
- AdBlue/SCR issues on EA288 diesels
- MMI (MIB2) infotainment can reboot or freeze
- Early OM654 diesel: rocker arm / camshaft concerns
- 9G-TRONIC: fluid changes recommended earlier than official intervals
- MBUX software glitches (mostly fixed via updates)
- M254 (48V mild-hybrid): electrical issues possible
Pros
- Class-leading interior quality & finish
- Efficient, quiet EA288 diesel
- Composed ride with optional quattro
- MBUX dual-screen and modern S-Class-inspired styling
- Efficient OM654 2.0 diesel (C 220 d: 200 hp / 440 Nm, ~4.6 L/100 km)
- MRA2 rear-wheel-drive platform with optional 4MATIC
- C 300 e PHEV: 313 hp and 550 Nm, ~100 km electric range
Cons
- Firm ride on S line + big wheels
- Less engaging steering than the 3 Series
- OM654 diesel: AdBlue/DPF watch-points with lots of short trips
- PHEV (C 300 e) shrinks boot space
- 9G-TRONIC needs earlier-than-official fluid changes
Driving experience
Audi A4
What defines the B9 is how quietly it gets on with the job. The cabin is hushed, the ride composed, and quattro ultra shuffles torque between the axles without ever letting on, giving a planted, almost understeer-free security. Steering is accurate but deliberately light and never asks much of you. Engines are the real story: the 2.0 TFSI is brisk and tractable, the 2.0 TDI the sensible long-distance choice, and the 3.0 TDI V6 pulls like a locomotive with the manners of a far larger car. The S tronic snaps through gears crisply; the tiptronic simply dissolves them. What you give up in steering feel you win back in effortless progress.
Mercedes-Benz C-Class
Serene, refined and quietly effortless to drive. The W206 puts comfort first: the ride is supple and isolating, the 9G-Tronic shifts are seamless, and the cabin stays hushed at speed. Steering is light and precise rather than talkative, and the body rolls a little more than a 3 Series in corners, but it never feels unsettled. 4MATIC adds all-weather traction without changing the relaxed character. Every engine is a 48-volt mild hybrid, so the petrols are smooth and eager, the diesels pull strongly and stay quiet, and the C 300 e plug-in glides on electric power around town. Overall a calm, tech-rich executive saloon that trades ultimate sportiness for effortless long-distance comfort.
Belgian taxes & LEZ
For sale at dealers
Audi A4
37 for sale · from € 2.990
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Mercedes-Benz C-Class
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