The Comparative Analysis :
BMW Z4 Roadster sDrive35i Sport-Automatic DKG (09 - 13) vs. Audi TTS Roadster quattro S tronic (15 - 18)
€ 51,700
![BMW Z4 Roadster sDrive35i Sport-Automatic DKG (09 - 13)](graphbase/cars/cars_big_png/BMW_Z4_E89.png)
€ 56,100
![Audi TTS Roadster quattro S tronic (15 - 18)](graphbase/cars/cars_big/Audi_TTS_8S_Roadster.webp)
€ 51,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 56,100
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ slightly. The BMW Z4 Roadster sDrive35i is 1.9 inches longer, 1.7 inches narrower and 2.1 inches lower than the Audi TTS Roadster.
BMW Z4 Roadster sDrive35i
Audi TTS Roadster
50.8
70.5
76.8
53
72.1
77.4
70.5 in
Width
72.1 in
76.8 in
Width Incl. Mirrors
77.4 in
50.8 in
Height
53 in
98.3
166.9
98.6
165
166.9 in
Length
165 in
98.3 in
Wheelbase
98.6 in
Vehicle Weight
BMW Z4 Roadster sDrive35i
Audi TTS Roadster
3527 lb
Curb Weight
3406 lb
4090 lb
Gross Vehicle
Weight
Weight
3946 lb
![BMW Z4 Roadster sDrive35i Sport-Automatic DKG (09 - 13)](graphbase/cars/cars_big_png/BMW_Z4_E89.png)
Weight Difference:
121 lb
3.43 %
![Audi TTS Roadster quattro S tronic (15 - 18)](graphbase/cars/cars_big_png/Audi_TTS_8S_Roadster.png)
General
BMW Z4 Roadster sDrive35i
Audi TTS Roadster
E89
Generation
8S
Roadster
Car Body Style
Roadster
Premium Unleaded
Fuel Type
Premium Unleaded
![](graphbase/drivetrain/RWD.png)
Rear-wheel drive
Drivetrain
Permanent all-wheel drive (AWD)
![](graphbase/drivetrain/AWD.png)
7-speed dual clutch transmission
Transmission
6-speed dual clutch transmission
Engine
BMW Z4 Roadster sDrive35i
Audi TTS Roadster
Straight-six gasoline engine with two turbochargers (biturbo)
Engine Type
Straight-four gasoline engine with turbocharger
BMW N54
Engine Series
VW EA888
N54-B30
Engine Code
CJXG
![](graphbase/engines/BMW_N54.png)
![](graphbase/engines/VW_EA888.png)
4
Valves
4
6
Cylinders
4
3 L / 147 cu in
Displacement
2 L / 98 cu in
302 hp
at 5800 rpm
Power
306 hp
at 5800 rpm
BMW Z4 Roadster sDrive35i
302 hp
306 hp
Audi TTS Roadster
295 lb‑ft
at 1300 rpm
Max. Torque
280 lb‑ft
at 1800 rpm
BMW Z4 Roadster sDrive35i
295 lb‑ft
280 lb‑ft
Audi TTS Roadster
Performance
BMW Z4 Roadster sDrive35i
Audi TTS Roadster
155 mph
Maximum Speed
155 mph
5.1 sec
Acceleration 0 to 62 mph
4.9 sec
62 mph
62
mph
mph
233 ft
0.000 sec
![](graphbase/cars/cars_small_png/BMW_Z4_E89.png)
BMW Z4 Roadster sDrive35i
62 mph
62
mph
mph
223 ft
0.000 sec
![](graphbase/cars/cars_small_png/Audi_TTS_8S_Roadster.png)
Audi TTS Roadster
▶ REPLAY
11.68 lb/hp
Weight-to-Power Ratio
11.13 lb/hp
BMW Z4 Roadster sDrive35i
11.68 lb/hp
11.13 lb/hp
Audi TTS Roadster
Fuel Economy / Emissions
BMW Z4 Roadster sDrive35i
Audi TTS Roadster
Fuel Economy
26 mpg
combined
34 mpg
BMW Z4 Roadster sDrive35i
26 mpg
34 mpg
Audi TTS Roadster
19 mpg
city
28 mpg
No data
highway
No data
14.5 gal
Fuel Tank Capacity
14.5 gal
380 mi
Range
495 mi
BMW Z4 Roadster sDrive35i
380 mi
495 mi
Audi TTS Roadster
Environmental Impact
170.4 kWh
Total Energy Consumption
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
130.7 kWh
BMW Z4 Roadster sDrive35i
170.4 kWh
130.7 kWh
Audi TTS Roadster
Euro 5
Emission Standard
Euro 6b (NEFZ)
338 g/mi (NEFZ)
CO2 Emissions
256 g/mi (NEFZ)
Practical Convenience
BMW Z4 Roadster sDrive35i
Audi TTS Roadster
2
Doors
2
2
No. of Seats
2
562 lb
Maximum Payload
540 lb
8.8 cu ft
Trunk Volume
7.9 cu ft
![](graphbase/koffer/KL.png)
![](graphbase/koffer/KL.png)
![](graphbase/koffer/KS.png)
![](graphbase/koffer/KB.png)
![](graphbase/koffer/KL.png)
![](graphbase/koffer/KL.png)
![](graphbase/koffer/KB.png)
![](graphbase/koffer/KB.png)
No data
Cargo Volume (Seats Down)
No data