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

compare selected cars
2006. - 2009.
S - Sports car
cabriolet, 2 door
rear
Badges
Production
Vehicle class
Body style
Wheel drive
Safety
2006. - 2010.
S - Sports car
cabriolet, 2 door
4 x 4

Marketing

Dimensons & Outlines

4091 mm
1781 mm
1299 mm
240 liters
260 liters
55 liters
Length
Width
Height
Boot (min)
Boot (max)
Fuel tank
4178 mm
1842 mm
1358 mm
250 liters
250 liters
55 liters
2006 BMW Z4 Roadster
2006 Audi TT Roadster

Engine

Petrol
6 - Inline, 4 valves per cylinder
Nat. Asp.
2497 cc
174 hp
230 Nm
Engine
Fuel
Configuration
Aspiration
Displacement
Power
Torque
Volkswagen
2.5 TFSI
Petrol
5 - Inline, 4 valves per cylinder
Turbo
2480 cc
340 hp
450 Nm

Performance (manual gearbox)

manual gearbox - 6 gears
1245 kg
7.1 s
229 km/h
11.8 l/100km
6.1 l/100km
8.2 l/100km
197 g/km
Gearbox type
Vehicle weight
Acc. 0-100
Top speed
Cons. (urban)
Cons. (highway)
Cons. (average)
CO2 emissions
manual gearbox - 6 gears
1510 kg
4.7 s
250 km/h
13.3 l/100km
7.2 l/100km
9.5 l/100km
221 g/km

Performance (automatic gearbox)

automatic - 6 gears
1275 kg
7.7 s
225 km/h
12.0 l/100km
6.3 l/100km
8.4 l/100km
202 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

Expenses

8800 EUR
Price from
7500 EUR

Virtual Adviser's™ opinion

Overview

Two significantly similar cars, no doubt about that. Still, each one has something different to offer. Having both cars powered by petrol engines and utilizing the 2-door cabriolet body style within the same 'Sports car' segment, the only major difference here really is their wheel drive configuration (rear for the BMW and 4 x 4 in the case of the Audi). The first one has a BMW-engineered powertrain under the hood, a 6-cylinder, 24-valves 174hp unit, while the other one gets its power and torque from a 5-cylinder, 20-valves 340hp engine designed by Volkswagen.

Safety

Both vehicles got tested by European New Car Assessment Programme (Euro NCAP), with the same number of safety stars gained in the process. Moving further on, let's take a closer look at some additional safety-related facts. Both vehicles belong to the sports car segment, which is generally classifying them somewhere in the middle safety-wise, but that fact doesn't break the tie between the two cars. On the other hand, taking kerb weight as an important factor into account, Audi TT offers a considerable difference of 21% 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 BMW, as well as Audi, with the same average rating of 4.2 out of 5. Some independent research have also placed Z4 as average reliability-wise, and TT is more or less at the same level.We should definitely mention that owners of cars with the same powertrain as BMW Z4 rank it on average as 3.0, while the one under the competitor's bonnet gets 5.0 out of 5.

Performance & Fuel economy

Audi is undoubtly more agile, reaching 100km/h in 2.4 seconds less than its competitor. In addition to that it accelerates all the way to 250 kilometers per hour, 21km/h more than the other car. When it comes to fuel economy the winner has to be BMW Z4, averaging around 8.2 liters of fuel per 100 kilometers (34 mpg), in combined cycle. We can't ignore that 16% difference compared to Audi TT.


Verdict

Audi 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, Audi TT offers significantly better overall protection, taking the lead here. It all continues in the same direction, with Audi being considerably quicker, thus putting more smile on driver's face. It does come at a cost though, and that's the fuel consumption... It's really tough to make a final decision here, but if I'd need to, I'd say Audi. 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, out of 12.000+ vehicles we currently have in our database.

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