Mercedes C class is more dynamic to drive. Mercedes C class engine produces 62 HP more power than BMW 3 series, whereas torque is 90 NM more than BMW 3 series. Thanks to more power Mercedes C class reaches 100 km/h speed 3.1 seconds faster.
Fuel consumption
Fuel consumption (l/100km):
8.1
6.4
The BMW 3 series is a better choice when it comes to fuel economy. 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.
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.
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.
