Mercedes-Benz C-Class W206 vs Peugeot 508 R83
Mercedes-Benz C-Class
W206 · 2021 – 2026
The fifth-generation C-Class on the MRA2 platform.
Peugeot 508
R83 · 2018 – 2026
The second 508 (R83), a fastback on EMP2 with PHEV and PSE.
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.
Peugeot 508
Pick the R83 for the modern 508 with a sharp fastback design and strong engines.
Performance
M254 C 200 · Petrol vs 1.6 PureTech 225 · Petrol
| Mercedes-Benz C-Class | Peugeot 508 | |
|---|---|---|
| Power |
204 hp
|
225 hp
Winner
|
| Torque |
300 Nm
|
300 Nm
|
| 0–100 km/h |
7,3 s
|
7,3 s
|
| Top speed |
246 km/h
|
250 km/h
Winner
|
| Power-to-weight |
129,5 hp/t
|
158,5 hp/t
Winner
|
| CO₂ emissions (WLTP) |
140 g/km
|
140 g/km
|
| Consumption (WLTP) |
6,2 L/100km
|
6,0 L/100km
Winner
|
Dimensions & space
| Mercedes-Benz C-Class | Peugeot 508 | |
|---|---|---|
| Boot |
455 L
|
487 L
Winner
|
| Boot (seats folded) |
—
|
1.537 L
|
| Wheelbase |
2,87 m
Winner
|
2,79 m
|
| Length |
4,75 m
|
4,75 m
|
| Ground clearance |
13,0 cm
|
—
|
| Turning circle |
11,1 m
Winner
|
11,2 m
|
| Towing capacity (braked) |
1.800 kg
Winner
|
1.600 kg
|
Powertrain & tech
| Mercedes-Benz C-Class | Peugeot 508 | |
|---|---|---|
| Platform | MRA2 (rear-wheel-drive base) | EMP2 (modular) |
| Drive | Rear-wheel drive · All-wheel drive | Front-wheel drive · All-wheel drive |
| Engine family | M254 petrol · OM654 diesel · plug-in hybrid | 1.2 PureTech · 1.6 PureTech petrol · 1.5/2.0 BlueHDi diesel · Hybrid/PSE PHEV |
| Transmission | 9-speed 9G-TRONIC | EAT8 automatic |
| Fuel | Petrol | Petrol |
| Euro standard | Euro 6d | Euro 6d |
| LEZ access | Unrestricted access (compliant under current legislation) | Unrestricted access (compliant under current legislation) |
Reliability & watch-outs
Known issues
- 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
- 1.2 PureTech: wet timing belt
- 1.5 BlueHDi: AdBlue and chain on early units
- Infotainment software needs updates
Pros
- 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
- Stylish fastback design
- Strong 2.0 BlueHDi diesel
- PHEV and PSE available
Cons
- 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
- Boot smaller than classic saloons
- Low driving position
Driving experience
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.
Peugeot 508
The R83 wears a four-door coupé suit but rides the EMP2 bones of a family saloon, and that mix defines it. It sits low and wide, so the front axle feels keen and the car tracks calmly through corners, while the long wheelbase keeps it planted on the motorway. The small i-Cockpit wheel and raised dials are the most extreme Peugeot has done and demand a real acclimatisation; once settled, the steering is quick and accurate and body roll stays well held. Most versions ride on a comfort-tuned rear that smothers broken tarmac, though big wheels and firmer GT/PSE damping add some fidget. The 2.0 BlueHDi pulls strongly and quietly, the PSE is properly rapid, and the EAT8 automatic shifts without drama. It is a composed, comfortable fastback, not a sports saloon.
Belgian taxes & LEZ
For sale at dealers
Mercedes-Benz C-Class
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