BMW 3 series engine produces 7 HP more power than Mercedes C class, but torque is 10 NM less than Mercedes C class.
Fuel consumption
Fuel consumption (l/100km):
7.4
7.3
Real fuel consumption:
8.2 l/100km
8.5 l/100km
By specification BMW 3 series consumes 0.1 litres more fuel per 100 km than the Mercedes C class, which means that if you drive 15,000 km in a year, the BMW 3 series could require 15 litres more fuel. But when we compare the real fuel consumption reported by users, BMW 3 series consumes 0.3 litres less fuel per 100 km than the Mercedes C class.
Fuel tank capacity:
61 litres
66 litres
Full fuel tank distance:
820 km in combined cycle
900 km in combined cycle
1030 km on highway
1110 km on highway
740 km with real consumption
770 km with real consumption
Mercedes C class gets more mileage on one fuel tank.
Engines
Engine production duration:
5 years
20 years
Engine spread:
Installed on at least 6 other car models, including BMW 5 sērija, BMW X5, BMW 7 sērija, BMW X3, BMW X6
Installed on at least 9 other car models, including Mercedes E klase, Mercedes ML, Mercedes G klase
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 2005 3.0 engine: The BMW M57 engine is regarded as one of the best German-built power units. Its inline-six layout is praised for reliability, and cars equipped with this engine are often more desirable on the used market. Despite delivering strong performance, the ... More about BMW 3 sērija 2005 3.0 engine
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.
