Compare two cars

Compare any two cars and get our Virtual Adviser™ opinion

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

compare selected cars
2010. - 2014.
E - Luxury car
sedan, 4 door
rear
Badges
Production
Vehicle class
Body style
Wheel drive
Safety
2011. - 2015.
E - Luxury car
sedan, 4 door
rear

Marketing

Dimensons & Outlines

4940 mm
1881 mm
1416 mm
520 liters
520 liters
59 liters
Length
Width
Height
Boot (min)
Boot (max)
Fuel tank
5007 mm
1894 mm
1392 mm
460 liters
1265 liters
70 liters
2010 Mercedes Benz CLS
2011 BMW 6 Series Gran Coupe

Engine

Mercedes Benz
4.7 M278 E47
Petrol
8 - V config, 4 valves per cylinder
Nat. Asp.
4663 cc
408 hp
600 Nm
Engine
Fuel
Configuration
Aspiration
Displacement
Power
Torque
Petrol
8 - V config, 4 valves per cylinder
Bi-Turbo
4395 cc
450 hp
650 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 - 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
Gearbox type
Vehicle weight
Acc. 0-100
Top speed
Cons. (urban)
Cons. (highway)
Cons. (average)
CO2 emissions
automatic - 8 gears
1840 kg
4.6 s
250 km/h
11.9 l/100km
6.6 l/100km
8.6 l/100km
199 g/km

Expenses

17000 EUR
Price from
18000 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 Mercedes Benz-engineered powertrain under the hood, a 8-cylinder, 32-valves 408hp unit, while the other one gets its power and torque from a 8-cylinder, 32-valves 450hp engine designed by BMW.

Safety

Unfortunatelly, neither of the two vehicles was submitted to the European New Car Assessment Programme (Euro NCAP) testing. This makes it virtually impossible for me to pick one over the other and I'm generally against buying such cars as the safety should really always come first. Still, apart from the official crash test results there are other things we need to be aware of. 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? On the other hand, taking kerb weight as an important factor into account, 6 Series Gran Coupe offers a marginal difference of 3% more metal.

Reliability

Reliability is not the best thing to consider on the make level, but it is worth mentioning that both brands display similar results in faults and breakdowns, all the models observed together. That's the official data, while our visitors describe reliability of Mercedes Benz with an average rating of 4.4, and models under the BMW badge with 4.2 out of 5. Some independent research have also placed CLS as average reliability-wise, and 6 Series Gran Coupe is more or less at the same level.We should definitely mention that owners of cars with the same powertrain as CLS rank it on average as 3.0, while the one under the competitor's bonnet gets 5.0 out of 5.

Performance & Fuel economy

BMW is a bit more agile, reaching 100km/h in 0.6 seconds less than its competitor. In addition to that it accelerates all the way to 250 kilometers per hour, exactly the same as the other car does. When it comes to fuel economy things look pretty much the same for both cars, averaging around 8.8 liters of fuel per 100 kilometers (32 mpg), in combined cycle.


Verdict

BMW 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 offers slightly better overall protection and takes the lead. It all continues in the same direction, with BMW offering somewhat better performance, just enough to call it quicker. 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. 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, out of 12.000+ vehicles we currently have in our database.

Check a car by its VIN number

Follow us

AutoManiac Instagram

AutoManiac Facebook

AutoManiac database currently covers:

47worldwide automotive brands
1.565different vehicle models
2.275engines
14.080specific cars