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

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2006. - 2009.
S - Sports car
coupe, 2 door
Rear
Badges
Production
Vehicle class
Body style
Wheel drive
Safety
2005. - 2011.
S - Sports car
coupe, 2 door
Rear

Dimensons & Volumes

4091 mm
1781 mm
1268 mm
260 liters
260 liters
55 liters
Length
Width
Height
Boot (min)
Boot (max)
Fuel tank
4427 mm
1808 mm
1310 mm
135 liters
135 liters
64 liters

Engine

Petrol
6 - Inline, 4 valves per cylinder
Nat. Asp.
2996 cc
265 hp
315 Nm
Engine
Fuel
Configuration
Aspiration
Displacement
Power
Torque
Petrol
6 - Boxer, 4 valves per cylinder
Nat. Asp.
3596 cc
325 hp
370 Nm

Performance (manual gearbox)

manual gearbox - 6 gears
1295 kg
5.7 s
250 km/h
12.6 l/100km
6.3 l/100km
8.6 l/100km
207 g/km
Gearbox type
Vehicle weight
Acc. 0-100
Top speed
Cons. (urban)
Cons. (highway)
Cons. (average)
CO2 emissions
manual gearbox - 6 gears
1470 kg
5.0 s
285 km/h
16.1 l/100km
8.1 l/100km
11.0 l/100km
g/km

Performance (automatic gearbox)

automatic - 6 gears
1325 kg
6.0 s
250 km/h
12.8 l/100km
6.8 l/100km
9.0 l/100km
217 g/km
Gearbox type
Vehicle weight
Acc. 0-100
Top speed
Cons. (urban)
Cons. (highway)
Cons. (average)
CO2 emissions
automatic - 5 gears
1510 kg
5.5 s
280 km/h
16.5 l/100km
8.1 l/100km
11.2 l/100km
g/km

Expenses

13500 EUR
694 - 730 EUR
Price from
Tax
1 EUR
1254 - 1561 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 sports car segment and utilize the same 2-door coupe 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 6-cylinder, 24-valves 265hp unit, while the other one gets its power and torque from a 6-cylinder, 24-valves 325hp engine designed by Porsche.

Safety

The fact that the BMW got tested by the European New Car Assessment Programme (Euro NCAP), while the other contender didn't, offers a slight advantage, as the 4-star rating is better than none. That aside, let's consider some other aspects which affect safety. Both vehicles belong to the sports car segment, which is generally classifying them somewhere in the middle safety-wise, still it doesn't help us solve our dilemma, does it? On the other hand, when it comes to weight, a factor that most people underestimate, 911 offers a considerable difference of 14% more metal.

Reliability

Reliability is not the best thing to consider on the make level, but it is worth mentioning that BMW does have a slight advantage, all the models observed together. 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 Porsche badge with 2.5 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 BMW Z4 rank it on average as 4.0, while the one under the competitor's bonnet gets 3.0 out of 5.

Performance & Fuel economy

Porsche is a bit more agile, reaching 100km/h in 0.7 seconds less than its competitor. In addition to that it accelerates all the way to 285 kilometers per hour, 35km/h more than the other car. When it comes to fuel economy an obvious choice would be BMW Z4, averaging around 8.6 liters of fuel per 100 kilometers (33 mpg), in combined cycle. That's 28% difference compared to 911!

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, BMW Z4 offers significantly better overall protection, taking the lead here. From there things take a different direction, with Porsche offering somewhat better performance, just enough to call it quicker. 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. 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. I suggest you spend two more minutes in order to find out which car, based on your needs and budget, would be picked by the virtual adviser, out of 12.000+ vehicles we currently have in our database.

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