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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
2005. - 2009.
F - Executive car
sedan, 4 door
rear
Badges
Production
Vehicle class
Body style
Wheel drive
Safety
2005. - 2008.
F - Executive car
sedan, 4 door
rear

Dimensons & Volumes

5076 mm
1871 mm
1473 mm
560 liters
560 liters
90 liters
Length
Width
Height
Boot (min)
Boot (max)
Fuel tank
5039 mm
1902 mm
1491 mm
500 liters
500 liters
88 liters

Engine

Mercedes Benz
5.5 M275 E55 AL HP
Petrol
12 - V config, 3 valves per cylinder
Bi-Turbo
5513 cc
517 hp
830 Nm
Engine
Fuel
Configuration
Aspiration
Displacement
Power
Torque
Petrol
12 - V config, 4 valves per cylinder
Nat. Asp.
5972 cc
445 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 - 5 gears
2080 kg
4.6 s
250 km/h
21.7 l/100km
10.0 l/100km
14.3 l/100km
340 g/km
Gearbox type
Vehicle weight
Acc. 0-100
Top speed
Cons. (urban)
Cons. (highway)
Cons. (average)
CO2 emissions
automatic - 6 gears
2080 kg
5.5 s
250 km/h
20.2 l/100km
9.5 l/100km
13.4 l/100km
325 g/km

Expenses

7000 EUR
Price from
4400 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 executive 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 12-cylinder, 36-valves 517hp unit, while the other one gets its power and torque from a 12-cylinder, 48-valves 445hp 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 executive car segment, which is generally a fortune safety-wise, but that fact doesn't break the tie between the two cars. Furthermore, taking kerb weight as an important factor into account, 7 Series offers a marginal difference of 1% 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. These are the results of an independent reasearch, while our visitors describe reliability of Mercedes Benz with an average rating of 4.4, and models under the BMW badge with 4.3 out of 5. Some independent research have also placed S as average reliability-wise, and 7 Series is more or less at the same level.Above it all, drivers of cars with the same engine as Mercedes Benz S rank it on average as 3.0, while the one under the competitor's bonnet gets 4.0 out of 5.

Performance & Fuel economy

Mercedes Benz is a bit more agile, reaching 100km/h in 0.9 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 7 Series, averaging around 13.4 liters of fuel per 100 kilometers (21 mpg), in combined cycle. We can't ignore that 7% difference compared to Mercedes Benz S.


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, 7 Series offers slightly better overall protection and takes the lead. From there things take a different direction, with Mercedes Benz offering somewhat better performance, just enough to call it quicker. It does come at a cost though, and that's the fuel consumption... 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. 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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