BMW 3 series is more dynamic to drive. BMW 3 series engine produces 41 HP more power than Mercedes C class, whereas torque is 20 NM more than Mercedes C class. Thanks to more power BMW 3 series reaches 100 km/h speed 0.9 seconds faster.
Fuel consumption
Fuel consumption (l/100km):
7.2
9.4
Real fuel consumption:
11.0 l/100km
10.5 l/100km
By specification BMW 3 series consumes 2.2 litres less fuel per 100 km than the Mercedes C class, which means that by driving the BMW 3 series over 15,000 km in a year you can save 330 litres of fuel. But when we compare the real fuel consumption reported by users, BMW 3 series consumes 0.5 litres more fuel per 100 km than the Mercedes C class.
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:
7 years
13 years
Engine spread:
Installed on at least 2 other car models, including BMW 5 sērija, BMW 6 sērija
Installed on at least 6 other car models, including Mercedes E klase, Mercedes CLK, Mercedes SLK
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.
BMW 3 sērija 2007 3.0 engine: Relatively reliable engine. Most of the problems are related to the fuel injection system, spark plugs and coils, and the Vanos phase control system. Problems with the high-pressure fuel pump were common in ... More about BMW 3 sērija 2007 3.0 engine
Dimensions
Length:
4.52 m
4.58 m
Width:
1.82 m
1.77 m
Height:
1.42 m
1.45 m
BMW 3 series is 6 cm shorter than the Mercedes C class, 5 cm wider, while the height of BMW 3 series is 3 cm lower.
Trunk capacity:
460 litres
475 litres
BMW 3 series has 15 litres less trunk space than the Mercedes C class.
Turning diameter:
11 meters
10.84 meters
The turning circle of the BMW 3 series is 0.16 metres more than that of the Mercedes C class.
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.
