Engine chain usually needs to be replaced less often than the timing belt, but the cost of replacing the chain is usually higher. Chain motors are considered to be more reliable, but noisier and more vibration generating.
Performance
Power:
115 HP
130 HP
Torque:
250 NM
285 NM
Acceleration 0-100 km/h:
12.1 seconds
10.1 seconds
Audi A4 is a more dynamic driving. Mercedes C class engine produces 15 HP less power than Audi A4, whereas torque is 35 NM less than Audi A4. Due to the lower power, Mercedes C class reaches 100 km/h speed 2 seconds later.
Fuel consumption
Fuel consumption (l/100km):
6.7
5.5
Real fuel consumption:
6.7 l/100km
6.5 l/100km
The Audi A4 is a better choice when it comes to fuel economy. By specification Mercedes C class consumes 1.2 litres more fuel per 100 km than the Audi A4, which means that if you drive 15,000 km in a year, the Mercedes C class could require 180 litres more fuel. By comparing actual fuel consumption based on user reports, Mercedes C class consumes 0.2 litres more fuel per 100 km than the Audi A4.
Fuel tank capacity:
62 litres
70 litres
Full fuel tank distance:
920 km in combined cycle
1270 km in combined cycle
1210 km on highway
1520 km on highway
920 km with real consumption
1070 km with real consumption
Audi A4 gets more mileage on one fuel tank.
Drive type
Wheel drive type:
Rear wheel drive (RWD)
Front wheel drive (FWD)
Engines
Engine production duration:
8 years
8 years
Engine spread:
Installed on at least 2 other car models, including Mercedes E klase, Mercedes Vito
Installed on at least 3 other car models, including Volkswagen Passat, Audi A6, Skoda Superb
In general, the longer and for more car models an engine is produced, the better its serviceability and availability of spare parts. Audi A4 might be a better choice in this respect.
Audi A4 has fewer problems. According to annual technical inspection data Mercedes C class has serious deffects in 20 percent more cases than Audi A4, so Audi A4 quality is probably better
