Mercedes C class engine produces 20 HP more power than BMW 3 series, whereas torque is 30 NM more than BMW 3 series.
Fuel consumption
Fuel consumption (l/100km):
9.7
7.2
The BMW 3 series is a better choice when it comes to fuel economy. Mercedes C class consumes 2.5 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 375 litres more fuel.
Fuel tank capacity:
62 litres
63 litres
Full fuel tank distance:
630 km in combined cycle
870 km in combined cycle
880 km on highway
1140 km on highway
BMW 3 series gets more mileage on one fuel tank.
Dimensions
Length:
4.53 m
4.47 m
Width:
1.73 m
1.74 m
Height:
1.43 m
1.42 m
Both cars are similar in size. Mercedes C class is 6 cm longer than the BMW 3 series, 1 cm narrower, while the height of Mercedes C class is 1 cm higher.
Trunk capacity:
no data
440 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 fewer problems. According to annual technical inspection data BMW 3 series has serious deffects in 10 percent more cases than Mercedes C class, so Mercedes C class quality is probably slightly better