Mercedes C class is more dynamic to drive. Mercedes C class engine produces 123 HP more power than BMW 3 series, whereas torque is 150 NM more than BMW 3 series. Thanks to more power Mercedes C class reaches 100 km/h speed 1.8 seconds faster.
Fuel consumption
Fuel consumption (l/100km):
11.9
9.8
Real fuel consumption:
13.5 l/100km
11.1 l/100km
The BMW 3 series is a better choice when it comes to fuel economy. By specification Mercedes C class consumes 2.1 litres more fuel per 100 km than the BMW 3 series, which means that if you drive 15,000 km in a year, the Mercedes C class could require 315 litres more fuel. By comparing actual fuel consumption based on user reports, Mercedes C class consumes 2.4 litres more fuel per 100 km than the BMW 3 series.
Fuel tank capacity:
62 litres
63 litres
Full fuel tank distance:
520 km in combined cycle
640 km in combined cycle
450 km with real consumption
560 km with real consumption
BMW 3 series gets more mileage on one fuel tank.
Engines
Average engine lifespan:
350'000 km
460'000 km
Engine resource depends largely on regular maintenance and the quality of the oils and fuels used, but under equal conditions the average life of a BMW 3 series engine could be longer.
Engine production duration:
10 years
7 years
Engine spread:
Used also on Mercedes SLK
Installed on at least 6 other car models, including BMW 5 sērija, BMW X5, BMW 7 sērija, BMW X3, BMW Z4
In general, the longer and for more car models an engine is produced, the better its serviceability and availability of spare parts.
Dimensions
Length:
4.54 m
4.48 m
Width:
1.73 m
1.74 m
Height:
1.47 m
1.41 m
Mercedes C class is 6 cm longer than the BMW 3 series, 1 cm narrower, while the height of Mercedes C class is 6 cm higher.
Trunk capacity:
no data
435 litres
Trunk max capacity: with rear seats folded down
no data
1345 litres
Turning diameter:
10.8 meters
10 meters
The turning circle of the Mercedes C class is 0.8 metres more than that of the BMW 3 series, which means Mercedes C class can be harder to manoeuvre in tight streets and parking spaces.
Mercedes C class has slightly fewer faults. Deffect rate in annual technical inspection is similar for both cars, it's slightly higher for BMW 3 series, so Mercedes C class quality could be a bit better.
