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Car #1
Make
Model
Variant
Engine
Car #2
Make
Model
Variant
Engine

compare selected cars
2015. -
E - Luxury car
sedan, 4 door
front
Badges
Production
Vehicle class
Body style
Wheel drive
Safety
2010. - 2014.
E - Luxury car
sedan, 4 door
4 x 4

Marketing

Dimensons & Outlines

5007 mm
1894 mm
1392 mm
460 liters
1265 liters
70 liters
Length
Width
Height
Boot (min)
Boot (max)
Fuel tank
4940 mm
1881 mm
1416 mm
520 liters
520 liters
59 liters
2015 BMW 6 Series Gran Coupe
2010 Mercedes Benz CLS

Engine

Diesel
6 - Inline, 4 valves per cylinder
Bi-Turbo
2993 cc
313 hp
630 Nm
Engine
Fuel
Configuration
Aspiration
Displacement
Power
Torque
Mercedes Benz
3.0 OM642 LS DE30 LA
Diesel
6 - Inline, 4 valves per cylinder
Turbo
2987 cc
265 hp
620 Nm

Performance (manual gearbox)

 
kg
s
km/h
l/100km
l/100km
l/100km
g/km
Gearbox type
Vehicle weight
Acc. 0-100
Top speed
Cons. (urban)
Cons. (highway)
Cons. (average)
CO2 emissions
 
kg
s
km/h
l/100km
l/100km
l/100km
g/km

Performance (automatic gearbox)

automatic - 8 gears
1785 kg
5.4 s
250 km/h
6.2 l/100km
4.9 l/100km
5.4 l/100km
143 g/km
Gearbox type
Vehicle weight
Acc. 0-100
Top speed
Cons. (urban)
Cons. (highway)
Cons. (average)
CO2 emissions
automatic - 7 gears
1775 kg
6.4 s
250 km/h
8.8 l/100km
5.6 l/100km
6.7 l/100km
177 g/km

Expenses

25000 EUR
Price from
17000 EUR

Virtual Adviser's™ opinion

Overview

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 'Luxury car' segment, the only major difference here really is their wheel drive configuration (front for the BMW and 4 x 4 in the case of the Mercedes Benz). The first one has a BMW-engineered powertrain under the hood, a 6-cylinder, 24-valves 313hp unit, while the other one gets its power and torque from a 6-cylinder, 24-valves 265hp engine designed by Mercedes Benz.

Safety

The fact that the BMW got tested by the European New Car Assessment Programme (Euro NCAP), while the other contender didn't, puts it sky-high safety-wise, in my eyes at least. Moving further on, let's take a closer look at some additional safety-related facts. Both vehicles belong to the luxury car segment, which is generally a very good thing safety-wise, but that fact doesn't break the tie between the two cars. Furthermore, when it comes to weight, a factor that most people underestimate, 6 Series Gran Coupe offers a marginal difference of 1% more metal.

Reliability

Manufacturers have been building their reliability reputation for decades now and, generally speaking, it appears that both brands display similar results in faults and breakdowns, when all the models are taken into account. These are the results of an independent reasearch, while our visitors describe reliability of BMW with an average rating of 4.2, and models under the Mercedes Benz badge with 4.4 out of 5. Unfortunatelly, I don't have enough insight that would allow me to comment in more details on the specific models level. We should definitely mention that owners of cars with the same powertrain as 6 Series Gran Coupe rank it on average as 4.6, while the one under the competitor's bonnet gets 4.8 out of 5.

Performance & Fuel economy

BMW is undoubtly more agile, reaching 100km/h in 1 seconds less than its competitor. Still, it lacks the power to win the top speed competition, topping at 250 kilometers per hour, exactly the same as the other car does. When it comes to fuel economy the winner has to be 6 Series Gran Coupe, averaging around 5.4 liters of fuel per 100 kilometers (52 mpg), in combined cycle. We can't ignore that 24% difference compared to CLS.


Verdict

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, 6 Series Gran Coupe beats the other contender by far, making it the best choice without even considering other things. It all continues in the same direction, with BMW being considerably quicker, thus putting more smile on driver's face. To make things even better, it consumps less fuel! All together, there's not much more to say, in this case I wouldn't even consider anything but BMW. In any case that's my personal view, built upon all the data available to me. What should decide here though is the way you feel about the two vehicles, and I hope you'll find my guidelines useful in the process. In case you have two minutes to spare I invite you to define your needs, desires and budget and see which car would be chosen by the virtual adviser, out of 12.000+ vehicles we currently have in our database.

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