BMW 3 series is more dynamic to drive. BMW 3 series engine produces 41 HP more power than Mercedes C class, whereas torque is 25 NM more than Mercedes C class. Thanks to more power BMW 3 series reaches 100 km/h speed 2.3 seconds faster.
Fuel consumption
Fuel consumption (l/100km):
9.6
9.8
Real fuel consumption:
10.0 l/100km
10.7 l/100km
The BMW 3 series is a better choice when it comes to fuel economy. By specification BMW 3 series consumes 0.2 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 30 litres of fuel. By comparing actual fuel consumption based on user reports, BMW 3 series consumes 0.7 litres less fuel per 100 km than the Mercedes C class.
BMW 3 series is 6 cm shorter than the Mercedes C class, 1 cm wider, while the height of BMW 3 series is 5 cm lower.
Trunk capacity:
435 litres
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Trunk max capacity: with rear seats folded down
1345 litres
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Turning diameter:
10 meters
10.8 meters
The turning circle of the BMW 3 series is 0.8 metres less than that of the Mercedes C class, which means BMW 3 series can be easier 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
