Car comparison

BMW Z4 (E85) 3.0ivsAUDI TT Roadster (8N) 1.8 T

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

New comparison

BMW Z4 (E85)

3.0i

231 hp2979 ccGasolineRWDAutomaticNaturally aspiratedRoadster2002-2006
VS

AUDI TT Roadster (8N)

1.8 T

225 hp1781 ccGasolineAWDManualTurbochargedRoadster1998-2000

Comparison overview

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

Best choices

BMW Z4 (E85) 3.0i

  • Quickest 0-100 km/h
    6.2 s
  • Fastest top speed
    250 km/h
    155 mph
  • Most powerful
    231 hp
    172 kW
  • Highest torque
    300 Nm
    221 lb-ft
  • Lightest
    1,365 kg
    3,009 lb
  • Best power-to-weight
    169 hp/t
    126 kW/t
    5.9 kg/hp
  • Lowest highway consumption
    7.3 L/100 km
    32.2 mpg US
    38.7 mpg UK
  • Largest trunk
    300 L
  • Best overall score
    50/100
  • Best performance score
    58/100
  • Best practicality score
    32/100

AUDI TT Roadster (8N) 1.8 T

  • Lowest combined fuel consumption
    9.4 L/100 km
    25.0 mpg US
    30.1 mpg UK
  • Lowest city consumption
    12.6 L/100 km
    18.7 mpg US
    22.4 mpg UK
  • Best estimated range
    660 km
    410 mi
  • Best economy score
    82/100

Specification comparison

Specification comparison
ModelBMWZ4 (E85)3.0iAUDITT Roadster (8N)1.8 T
Power
231hp172kW
225hp168kW
Torque
300Nm221lb-ft
280Nm207lb-ft
Curb weight
1,365kg3,009lb
1,475kg3,252lb
Gross weight
1,590kg3,505lb
1,775kg3,913lb
Top speed
250 km/h
155 mph
243 km/h
151 mph
To 99% top speed
76.1s99% target: 248 km/h / 154 mph
Calculated
83.5s99% target: 241 km/h / 149 mph
Calculated
0-100 km/h
6.2s
6.4s
0-200 km/h
23.0s
Calculated
26.1s
Calculated
0-60 mph
5.9s
Calculated
6.1s
Calculated
Fuel consumption
9.5L/100 km24.8mpg US29.7mpg UK
9.4L/100 km25mpg US30.1mpg UK
Fuel consumption city
13.5L/100 km17.4mpg US20.9mpg UK
12.6L/100 km18.7mpg US22.4mpg UK
Fuel consumption highway
7.3L/100 km32.2mpg US38.7mpg UK
7.6L/100 km30.9mpg US37.2mpg UK
Quarter mile
14.3s
Calculated
14.5s
Calculated
Power-to-weight
169hp/t126kW/t77hp/1000 lb
Calculated
153hp/t114kW/t69hp/1000 lb
Calculated
Torque-to-weight
220Nm/t147lb-ft/ton
Calculated
190Nm/t127lb-ft/ton
Calculated
Estimated range
579km360mi
Calculated
660km410mi
Calculated
Displacement
2,979cc182cu in
1,781cc109cu in
Length
4,091mm161in
4,041mm159in
Width
1,781mm70in
1,764mm69in
Height
1,299mm51in
1,348mm53in
Wheelbase
2,495mm98in
2,429mm96in
Front track
1,473mm58in
1,528mm60in
Rear track
1,523mm60in
1,505mm59in
Trunk volume
300L
180L
Doors
2
2
Seats
2
2
Fuel tank
55L
62L
CO2 emissions-
226g/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 (E85) 3.0iAUDI TT Roadster (8N) 1.8 TPowerTorque
  • BMW Z4 (E85) 3.0i: Power / Torque
  • AUDI TT Roadster (8N) 1.8 T: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWZ4 (E85)3.0i5,900 rpm3,500 rpm6,150 rpm
AUDITT Roadster (8N)1.8 T5,900 rpm2,200 rpm6,150 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMWZ4 (E85)3.0iAUDITT Roadster (8N)1.8 T
Acceleration checkpoints
0-60 mph
0-97 km/h
5.9 s
6.1 s
0-100 km/h
0-62 mph
6.2 s
6.4 s
0-200 km/h
0-124 mph
23.0 s
26.1 s
Top speed
250 km/h
155 mph
243 km/h
151 mph
Drag race simulation
60 ft
18 m
2.4 s
2.4 s
330 ft
101 m
6.3 s
6.3 s
1/8 mile
201 m
9.4 s
9.5 s
1000 ft
305 m
12.0 s
12.2 s
1/4 mile
402 m
14.3 s
14.5 s
Trap speed
1/4 mile
402 m
163 km/h
102 mph
158 km/h
98 mph

Power comparison

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

Chart data table
VehicleValue
BMWZ4 (E85)3.0i
231 hp
172 kW
AUDITT Roadster (8N)1.8 T
225 hp
168 kW

BMW Z4 (E85) 3.0i has 6 hp more than AUDI TT Roadster (8N) 1.8 T.

The biggest power difference is between AUDI TT Roadster (8N) 1.8 T and BMW Z4 (E85) 3.0i: 6 hp (4 kW).

Torque comparison

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

Chart data table
VehicleValue
BMWZ4 (E85)3.0i
300 Nm
221 lb-ft
AUDITT Roadster (8N)1.8 T
280 Nm
207 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMWZ4 (E85)3.0i
1,365 kg
3,009 lb
AUDITT Roadster (8N)1.8 T
1,475 kg
3,252 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 (E85)3.0i
250 km/h
155 mph
AUDITT Roadster (8N)1.8 T
243 km/h
151 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
BMWZ4 (E85)3.0i6.2 s
AUDITT Roadster (8N)1.8 T6.4 s

The biggest 0-100 km/h difference is between BMW Z4 (E85) 3.0i and AUDI TT Roadster (8N) 1.8 T: 0.2 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
BMWZ4 (E85)3.0i
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
AUDITT Roadster (8N)1.8 T
9.4 L/100 km
25.0 mpg US
30.1 mpg UK

Power-to-weight comparison

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

Chart data table
VehicleValue
BMWZ4 (E85)3.0i
169 hp/t
126 kW/t
5.9 kg/hp
AUDITT Roadster (8N)1.8 T
153 hp/t
114 kW/t
6.6 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMWZ4 (E85)3.0i
579 km
360 mi
AUDITT Roadster (8N)1.8 T
660 km
410 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWZ4 (E85)3.0i
231 hp
172 kW
6.2 s
250 km/h
155 mph
AUDITT Roadster (8N)1.8 T
225 hp
168 kW
6.4 s
243 km/h
151 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 (E85)3.0i
Power
231 hp
172 kW
0-100 km/h6.2 s
Top speed
250 km/h
155 mph
Doors/seats
2 doors
2 seats
Trunk
300 L
10.6 cu ft
Length
4,091 mm
161.1 in
Height
1,299 mm
51.1 in
AUDITT Roadster (8N)1.8 T
Power
225 hp
168 kW
0-100 km/h6.4 s
Top speed
243 km/h
151 mph
Doors/seats
2 doors
2 seats
Trunk
180 L
6.4 cu ft
Length
4,041 mm
159.1 in
Height
1,348 mm
53.1 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 (E85)3.0i
Power
231 hp
172 kW
0-100 km/h6.2 s
Top speed
250 km/h
155 mph
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
AUDITT Roadster (8N)1.8 T
Power
225 hp
168 kW
0-100 km/h6.4 s
Top speed
243 km/h
151 mph
9.4 L/100 km
25.0 mpg US
30.1 mpg UK

BMW Z4 (E85) 3.0i 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 (E85)3.0i
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
6.2 s
AUDITT Roadster (8N)1.8 T
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
6.4 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 (E85)3.0i
169 hp/t
126 kW/t
5.9 kg/hp
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
AUDITT Roadster (8N)1.8 T
153 hp/t
114 kW/t
6.6 kg/hp
9.4 L/100 km
25.0 mpg US
30.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMWZ4 (E85)3.0iAUDITT Roadster (8N)1.8 T
Power
231 hp
172 kW
225 hp
168 kW
Torque
300 Nm
221 lb-ft
280 Nm
207 lb-ft
Acceleration
6.2 s
6.4 s
Top speed
250 km/h
155 mph
243 km/h
151 mph
Lightness
1,365 kg
3,009 lb
1,475 kg
3,252 lb
Fuel consumption
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
300 L
10.6 cu ft
Length
4,091 mm
161.1 in
Height
1,299 mm
51.1 in
Doors/seats
2 doors
2 seats
Trunk
180 L
6.4 cu ft
Length
4,041 mm
159.1 in
Height
1,348 mm
53.1 in
Range score
579 km
360 mi
660 km
410 mi
CO2 score
-
226 g/km
Trunk score
300 L
10.6 cu ft
180 L
6.4 cu ft
Power-to-weight score
169 hp/t
126 kW/t
5.9 kg/hp
153 hp/t
114 kW/t
6.6 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 (E85) 3.0iAUDI TT Roadster (8N) 1.8 T
Consumption9.5 L/100 km24.8 mpg US29.7 mpg UK9.4 L/100 km25 mpg US30.1 mpg UK
Cost / 100 km16.63 LC100 km16.45 LC100 km
Cost / 100 mi26.76 LC100 mi26.47 LC100 mi
Annual fuel used1,425 L376 US gal313 UK gal1,410 L372 US gal310 UK gal
Annual fuel cost2,494 LC/year2,468 LC/year

Head-to-head comparisons

BMW Z4 (E85) 3.0i

  • Has 6 hp more
  • Has 20 Nm more
  • Is 110 kg lighter
  • Is 0.2 s quicker from 0-100 km/h
  • Has 7 km/h (4 mph) higher top speed
  • Has 17 hp/t better power-to-weight
  • Has 120 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Lightest
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Highest combined fuel consumption

AUDI TT Roadster (8N) 1.8 T

  • Uses 0.1 L/100 km less fuel
  • Has 81 km (50 mi) more estimated range

Pros

  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Heaviest
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW Z4 (E85) 3.0i
AUDI TT Roadster (8N) 1.8 T
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BMW Z4 (E85) 3.0i vs AUDI TT Roadster (8N) 1.8 T - car comparison - FastVsFaster