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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
rear
Badges
Production
Vehicle class
Body style
Wheel drive
Safety
2010. - 2014.
E - Luxury car
sedan, 4 door
rear

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

Petrol
8 - V config, 4 valves per cylinder
Bi-Turbo
4395 cc
560 hp
680 Nm
Engine
Fuel
Configuration
Aspiration
Displacement
Power
Torque
Mercedes Benz
4.7 M278 E47
Petrol
8 - V config, 4 valves per cylinder
Nat. Asp.
4663 cc
408 hp
600 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
1850 kg
4.2 s
250 km/h
13.9 l/100km
7.6 l/100km
9.9 l/100km
231 g/km
Gearbox type
Vehicle weight
Acc. 0-100
Top speed
Cons. (urban)
Cons. (highway)
Cons. (average)
CO2 emissions
automatic - 7 gears
1790 kg
5.2 s
250 km/h
12.5 l/100km
6.9 l/100km
9.0 l/100km
209 g/km

Expenses

25000 EUR
Price from
17000 EUR

Virtual Adviser's™ opinion

Overview

Well, these are two pretty similar cars we have here! It's only details that could potentially make the difference. Considering they both belong to the luxury car segment and utilize the same 4-door sedan body style and the rear wheel drive system, it all comes up to the specific petrol engine choice they offer. The first one has a BMW-engineered powertrain under the hood, a 8-cylinder, 32-valves 560hp unit, while the other one gets its power and torque from a 8-cylinder, 32-valves 408hp 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. That aside, let's consider some other aspects which affect safety. Both vehicles belong to the luxury car segment, which is generally a very good thing safety-wise, still it doesn't help us solve our dilemma, does it? Furthermore, when it comes to weight, a factor that most people underestimate, 6 Series Gran Coupe offers a marginal difference of 3% more metal.

Reliability

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. 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. That apart, owners of different cars powered by the same engine as 6 Series Gran Coupe rank it on average as 3.0 out of 5, exactly the same as the other one.

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 CLS, averaging around 9 liters of fuel per 100 kilometers (31 mpg), in combined cycle. We can't ignore that 10% difference compared to 6 Series Gran Coupe.


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. It does come at a cost though, and that's the fuel consumption... All together, there's not much more to say, in this case I wouldn't even consider anything but BMW. 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. 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, among more than 12.000 different ones in our database.

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