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Car #1
Car #2

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2004. - 2007.
D - Large family car
sedan, 4 door
Vehicle class
Body style
Wheel drive
2004. - 2007.
D - Large family car
sedan, 4 door


Dimensons & Outlines

4526 mm
1728 mm
1426 mm
455 liters
455 liters
62 liters
Boot (min)
Boot (max)
Fuel tank
4586 mm
1772 mm
1427 mm
460 liters
720 liters
70 liters
2004 Mercedes Benz C
2004 Audi A4


Mercedes Benz
2.1 OM646 DE22 LA
4 - Inline, 4 valves per cylinder
2148 cc
150 hp
340 Nm
4 - Inline, 4 valves per cylinder
1968 cc
140 hp
310 Nm

Performance (manual gearbox)

manual gearbox - 6 gears
1440 kg
10.1 s
224 km/h
8.6 l/100km
5.1 l/100km
6.4 l/100km
169 g/km
Gearbox type
Vehicle weight
Acc. 0-100
Top speed
Cons. (urban)
Cons. (highway)
Cons. (average)
CO2 emissions
manual gearbox - 6 gears
1430 kg
9.7 s
212 km/h
7.8 l/100km
4.5 l/100km
5.7 l/100km
153 g/km

Performance (automatic gearbox)

automatic - 5 gears
1460 kg
10.3 s
218 km/h
9.0 l/100km
5.4 l/100km
6.8 l/100km
178 g/km
Gearbox type
Vehicle weight
Acc. 0-100
Top speed
Cons. (urban)
Cons. (highway)
Cons. (average)
CO2 emissions
cvt - gears
1470 kg
9.8 s
206 km/h
7.6 l/100km
5.3 l/100km
6.1 l/100km
165 g/km


2800 EUR
Price from
2500 EUR

Virtual Adviser's™ opinion


Two significantly similar cars, no doubt about that. Still, each one has something different to offer. Having both cars powered by diesel engines and utilizing the 4-door sedan body style within the same 'Large family car' segment, the only major difference here really is their wheel drive configuration (rear for the Mercedes Benz and front in the case of the Audi). The first one has a Mercedes Benz-engineered powertrain under the hood, a 4-cylinder, 16-valves 150hp unit, while the other one gets its power and torque from a 4-cylinder, 16-valves 140hp engine designed by Volkswagen.


A starting point here would be to take a look at the results from European New Car Assessment Programme (Euro NCAP) tests which were performed on both of the cars, with the Mercedes Benz being a slightly better choice apparently. Still, apart from the official crash test results there are other things we need to be aware of. Both vehicles belong to the large family car segment, which is generally a good thing safety-wise, but it doesn't do much to help us decide between the two. Furthermore, taking kerb weight as an important factor into account, Mercedes Benz C offers a marginal difference of 1% more metal.


I don't like generalizing things when it comes to reliability, although it does seem that both brands display similar results in faults and breakdowns, when all the models are taken into account. That's the official data, while our visitors describe reliability of Mercedes Benz with an average rating of 4.4, and models under the Audi badge with 4.2 out of 5. Independent research findings rank C as average reliability-wise, and A4 is more or less at the same level.Above it all, drivers of cars with the same engine as Mercedes Benz C rank it on average as 4.9, while the one under the competitor's bonnet gets 4.3 out of 5.

Performance & Fuel economy

Audi is a bit more agile, reaching 100km/h in 0.4 seconds less than its competitor. Still, it lacks the power to win the top speed competition, topping at 212 kilometers per hour, 12km/h less than the other car. When it comes to fuel economy the winner has to be Audi A4, averaging around 5.7 liters of fuel per 100 kilometers (50 mpg), in combined cycle. We can't ignore that 12% difference compared to Mercedes Benz C.


Mercedes Benz appears just a bit more reliable, although the difference is truly marginal. The most important thing when deciding between any two vehicles should always be safety, both passive and active. In my opinion, everything taken into account, Mercedes Benz C offers much better overall protection, which launches it ahead of the other contender. From there things take a different direction, with Audi offering somewhat better performance, just enough to call it quicker. To make things even better, it consumps less fuel! No mistake, whatever you decide here, but I'd still go for the Audi. Nevertheless, let's not forget that people have different preferences and needs, so what really counts is your personal feel. I'm only here to help. Also, you could use the oportunity to find out which car, everything taken into account, would be the perfect choice for you in the eyes of the virtual adviser, among thousands of similar, yet so different vehicles.

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