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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
2015. -
E - Luxury car
sedan, 4 door
Rear
Badges
Production
Vehicle class
Body style
Wheel drive
Safety
2010. -
E - Luxury car
sedan, 4 door
Rear

Dimensons & Volumes

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

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
1715 kg
6.2 s
250 km/h
7.8 l/100km
5.0 l/100km
6.0 l/100km
159 g/km

Expenses

84830 EUR
1044 - 1080 EUR
Price from
Tax
29800 EUR
825 - 1080 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 diesel engine choice they offer. 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

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, 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 4% 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, when all the models are taken into account. These are the official statistics, 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 4.7, 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 0.8 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 things look pretty much the same for both cars, averaging around 5.7 liters of fuel per 100 kilometers (50 mpg), in combined cycle.

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 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! It's not difficult to say then that if I'd need to make a choice, it would definitely be the 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, among more than 12.000 different ones in our database.

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