Mercedes C class is more dynamic to drive. Mercedes C class engine produces 34 HP more power than BMW 3 series, whereas torque is 70 NM more than BMW 3 series. Thanks to more power Mercedes C class reaches 100 km/h speed 1.3 seconds faster.
Fuel consumption
Fuel consumption (l/100km):
7.8
6.1
Real fuel consumption:
8.2 l/100km
7.2 l/100km
The BMW 3 series is a better choice when it comes to fuel economy. By specification Mercedes C class consumes 1.7 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 255 litres more fuel. By comparing actual fuel consumption based on user reports, Mercedes C class consumes 1 litres more fuel per 100 km than the BMW 3 series.
Fuel tank capacity:
66 litres
63 litres
Full fuel tank distance:
840 km in combined cycle
1030 km in combined cycle
1100 km on highway
1230 km on highway
800 km with real consumption
870 km with real consumption
BMW 3 series gets more mileage on one fuel tank.
Engines
Average engine lifespan:
440'000 km
330'000 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 Mercedes C class engine could be longer.
Engine production duration:
13 years
6 years
Engine spread:
Installed on at least 3 other car models, including Mercedes E klase, Mercedes CLK, Mercedes SLK
Used also on BMW 1 sērija
In general, the longer and for more car models an engine is produced, the better its serviceability and availability of spare parts. Mercedes C class might be a better choice in this respect.
Dimensions
Length:
4.60 m
4.53 m
Width:
1.77 m
1.82 m
Height:
1.46 m
1.44 m
Mercedes C class is 7 cm longer than the BMW 3 series, 5 cm narrower, while the height of Mercedes C class is 2 cm higher.
Trunk capacity:
485 litres
460 litres
Mercedes C class has more luggage capacity. Mercedes C class has 25 litres more trunk space than the BMW 3 series.
Turning diameter:
10.84 meters
11 meters
The turning circle of the Mercedes C class is 0.16 metres less than that of the BMW 3 series.
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.
