Car comparison

BMW Z4 (E89) 35ivsAUDI TTS Roadster (8S) 2.0 TFSI

Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.

New comparison

BMW Z4 (E89)

35i

306 hp2979 ccGasolineRWDManualTurbochargedRoadster2010-2013
VS

AUDI TTS Roadster (8S)

2.0 TFSI

310 hp1984 ccGasolineAWDManualTurbochargedRoadster2014-2018

Comparison overview

Use the estimates as comparison hints and verify exact figures before making decisions.

Best choices

AUDI TTS Roadster (8S) 2.0 TFSI

  • Most powerful
    310 hp
    231 kW
  • Lightest
    1,450 kg
    3,197 lb
  • Best power-to-weight
    214 hp/t
    159 kW/t
    4.7 kg/hp
  • Lowest combined fuel consumption
    7.5 L/100 km
    31.4 mpg US
    37.7 mpg UK
  • Lowest city consumption
    9.5 L/100 km
    24.8 mpg US
    29.7 mpg UK
  • Lowest highway consumption
    6.3 L/100 km
    37.3 mpg US
    44.8 mpg UK
  • Lowest CO2 emissions
    173 g/km
  • Best estimated range
    733 km
    456 mi
  • Best economy score
    87/100

BMW Z4 (E89) 35i

  • Quickest 0-100 km/h
    5.2 s
  • Fastest top speed
    270 km/h
    168 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Highest torque
    400 Nm
    295 lb-ft
  • Best overall score
    56/100
  • Best performance score
    67/100
  • Best practicality score
    32/100

Specification comparison

Specification comparison
ModelBMWZ4 (E89)35iAUDITTS Roadster (8S)2.0 TFSI
Power
306hp228kW
310hp231kW
Torque
400Nm295lb-ft
380Nm280lb-ft
Curb weight
1,580kg3,483lb
1,450kg3,197lb
Gross weight
1,835kg4,045lb
1,770kg3,902lb
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
70.8s99% target: 267 km/h / 166 mph
Calculated
65.2s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.2s
5.2s
0-200 km/h
17.6s
Calculated
18.0s
Calculated
0-60 mph
5.0s
Calculated
4.9s
Calculated
Fuel consumption
9.4L/100 km25mpg US30.1mpg UK
7.5L/100 km31.4mpg US37.7mpg UK
Fuel consumption city
13.5L/100 km17.4mpg US20.9mpg UK
9.5L/100 km24.8mpg US29.7mpg UK
Fuel consumption highway
7L/100 km33.6mpg US40.4mpg UK
6.3L/100 km37.3mpg US44.8mpg UK
Quarter mile
13.3s
Calculated
13.3s
Calculated
Power-to-weight
194hp/t144kW/t88hp/1000 lb
Calculated
214hp/t159kW/t97hp/1000 lb
Calculated
Torque-to-weight
253Nm/t169lb-ft/ton
Calculated
262Nm/t175lb-ft/ton
Calculated
Estimated range
585km364mi
Calculated
733km456mi
Calculated
Displacement
2,979cc182cu in
1,984cc121cu in
Length
4,239mm167in
4,191mm165in
Width
1,790mm70in
1,832mm72in
Height
1,291mm51in
1,345mm53in
Wheelbase
2,496mm98in
2,505mm99in
Front track
1,511mm59in
1,574mm62in
Rear track
1,559mm61in
1,553mm61in
Trunk volume-
280L
Doors
2
2
Seats
2
2
Fuel tank
55L
55L
CO2 emissions
219g/km
173g/km

Performance charts

Use the estimates as comparison hints and verify exact figures before making decisions.

Dyno simulation

Estimated stock-style power and torque curves by engine speed.

BMW Z4 (E89) 35iAUDI TTS Roadster (8S) 2.0 TFSIPowerTorque
  • BMW Z4 (E89) 35i: Power / Torque
  • AUDI TTS Roadster (8S) 2.0 TFSI: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWZ4 (E89)35i5,800 rpm1,300-5,000 rpm6,050 rpm
AUDITTS Roadster (8S)2.0 TFSI5,800-6,200 rpm1,800-5,700 rpm6,450 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMWZ4 (E89)35iAUDITTS Roadster (8S)2.0 TFSI
Acceleration checkpoints
0-60 mph
0-97 km/h
5.0 s
4.9 s
0-100 km/h
0-62 mph
5.2 s
5.2 s
0-200 km/h
0-124 mph
17.6 s
18.0 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Drag race simulation
60 ft
18 m
2.2 s
2.2 s
330 ft
101 m
5.8 s
5.8 s
1/8 mile
201 m
8.7 s
8.7 s
1000 ft
305 m
11.2 s
11.2 s
1/4 mile
402 m
13.3 s
13.3 s
Trap speed
1/4 mile
402 m
176 km/h
109 mph
175 km/h
109 mph

Power comparison

Bar comparison chart for Power. Higher is better · hp / kW

Chart data table
VehicleValue
BMWZ4 (E89)35i
306 hp
228 kW
AUDITTS Roadster (8S)2.0 TFSI
310 hp
231 kW

AUDI TTS Roadster (8S) 2.0 TFSI has 4 hp more than BMW Z4 (E89) 35i.

The biggest power difference is between BMW Z4 (E89) 35i and AUDI TTS Roadster (8S) 2.0 TFSI: 4 hp (3 kW).

Torque comparison

Bar comparison chart for Torque. Higher is better · Nm / lb-ft

Chart data table
VehicleValue
BMWZ4 (E89)35i
400 Nm
295 lb-ft
AUDITTS Roadster (8S)2.0 TFSI
380 Nm
280 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
BMWZ4 (E89)35i
1,580 kg
3,483 lb
AUDITTS Roadster (8S)2.0 TFSI
1,450 kg
3,197 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
BMWZ4 (E89)35i
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
AUDITTS Roadster (8S)2.0 TFSI
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
BMWZ4 (E89)35i5.2 s
AUDITTS Roadster (8S)2.0 TFSI5.2 s

Although AUDI TTS Roadster (8S) 2.0 TFSI has more power, BMW Z4 (E89) 35i is quicker from 0-100 km/h.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
BMWZ4 (E89)35i
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
AUDITTS Roadster (8S)2.0 TFSI
7.5 L/100 km
31.4 mpg US
37.7 mpg UK

The biggest fuel consumption difference is between AUDI TTS Roadster (8S) 2.0 TFSI and BMW Z4 (E89) 35i: 1.9 L/100 km.

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
BMWZ4 (E89)35i
194 hp/t
144 kW/t
5.2 kg/hp
AUDITTS Roadster (8S)2.0 TFSI
214 hp/t
159 kW/t
4.7 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
VehicleValue
BMWZ4 (E89)35i
585 km
364 mi
AUDITTS Roadster (8S)2.0 TFSI
733 km
456 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWZ4 (E89)35i
306 hp
228 kW
5.2 s
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
AUDITTS Roadster (8S)2.0 TFSI
310 hp
231 kW
5.2 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Chart data table
VehiclePerformance scorePracticality score
BMWZ4 (E89)35i
Power
306 hp
228 kW
0-100 km/h5.2 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk-
Length
4,239 mm
166.9 in
Height
1,291 mm
50.8 in
AUDITTS Roadster (8S)2.0 TFSI
Power
310 hp
231 kW
0-100 km/h5.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
280 L
9.9 cu ft
Length
4,191 mm
165.0 in
Height
1,345 mm
53.0 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
BMWZ4 (E89)35i
Power
306 hp
228 kW
0-100 km/h5.2 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
AUDITTS Roadster (8S)2.0 TFSI
Power
310 hp
231 kW
0-100 km/h5.2 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
7.5 L/100 km
31.4 mpg US
37.7 mpg UK

AUDI TTS Roadster (8S) 2.0 TFSI is closest to the top-right balance target for performance and fuel economy.

Acceleration vs fuel consumption

Cars closer to the lower-left corner offer a better mix of quick acceleration and low fuel consumption.

Acceleration vs fuel consumption data table
VehicleFuel consumption, L/100 km0-100 km/h, s
BMWZ4 (E89)35i
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
5.2 s
AUDITTS Roadster (8S)2.0 TFSI
7.5 L/100 km
31.4 mpg US
37.7 mpg UK
5.2 s

Power-to-weight vs fuel consumption

The shaded area favors higher power-to-weight with lower combined fuel consumption.

Power-to-weight vs fuel consumption data table
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
BMWZ4 (E89)35i
194 hp/t
144 kW/t
5.2 kg/hp
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
AUDITTS Roadster (8S)2.0 TFSI
214 hp/t
159 kW/t
4.7 kg/hp
7.5 L/100 km
31.4 mpg US
37.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMWZ4 (E89)35iAUDITTS Roadster (8S)2.0 TFSI
Power
306 hp
228 kW
310 hp
231 kW
Torque
400 Nm
295 lb-ft
380 Nm
280 lb-ft
Acceleration
5.2 s
5.2 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,580 kg
3,483 lb
1,450 kg
3,197 lb
Fuel consumption
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
7.5 L/100 km
31.4 mpg US
37.7 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk-
Length
4,239 mm
166.9 in
Height
1,291 mm
50.8 in
Doors/seats
2 doors
2 seats
Trunk
280 L
9.9 cu ft
Length
4,191 mm
165.0 in
Height
1,345 mm
53.0 in
Range score
585 km
364 mi
733 km
456 mi
CO2 score
219 g/km
173 g/km
Trunk score
-
280 L
9.9 cu ft
Power-to-weight score
194 hp/t
144 kW/t
5.2 kg/hp
214 hp/t
159 kW/t
4.7 kg/hp
Overall
Fixed score
Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Enter the fuel price in your local currency, for example €/L, $/gal, £/L or any other local currency.

LC = Local Currency

Fuel cost and annual usage
VehicleBMW Z4 (E89) 35iAUDI TTS Roadster (8S) 2.0 TFSI
Consumption9.4 L/100 km25 mpg US30.1 mpg UK7.5 L/100 km31.4 mpg US37.7 mpg UK
Cost / 100 km16.45 LC100 km13.13 LC100 km
Cost / 100 mi26.47 LC100 mi21.12 LC100 mi
Annual fuel used1,410 L372 US gal310 UK gal1,125 L297 US gal247 UK gal
Annual fuel cost2,468 LC/year1,969 LC/year

Head-to-head comparisons

BMW Z4 (E89) 35i

  • Has 20 Nm more
  • Has 10 km/h (6 mph) higher top speed

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Highest torque

Cons

  • Lowest power
  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

AUDI TTS Roadster (8S) 2.0 TFSI

  • Has 4 hp more
  • Is 130 kg lighter
  • Uses 1.9 L/100 km less fuel
  • Has 20 hp/t better power-to-weight
  • Has 148 km (92 mi) more estimated range
  • Emits 46 g/km less CO2

Pros

  • Most powerful
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range

Cons

  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW Z4 (E89) 35i
AUDI TTS Roadster (8S) 2.0 TFSI
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