Car comparison

AUDI TT Roadster (8S) · Facelift 2018 40 TFSIvsBMW Z4 (G29) 20i

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

New comparison

AUDI TT Roadster (8S) · Facelift 2018

40 TFSI

197 hp1984 ccGasolineFWDAutomaticTurbochargedRoadster2018-2023
VS

BMW Z4 (G29)

20i

197 hp1998 ccGasolineRWDAutomaticTurbochargedRoadster2018-2022

Comparison overview

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

Best choices

BMW Z4 (G29) 20i

  • Quickest 0-100 km/h
    6.6 s
  • Lightest
    1,430 kg
    3,153 lb
  • Best power-to-weight
    138 hp/t
    103 kW/t
    7.3 kg/hp
  • Lowest combined fuel consumption
    6.0 L/100 km
    39.2 mpg US
    47.1 mpg UK
  • Lowest city consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Best estimated range
    867 km
    539 mi
  • Best economy score
    91/100

AUDI TT Roadster (8S) Facelift 2018 40 TFSI

  • Fastest top speed
    247 km/h
    153 mph
  • Most powerful
    197 hp
    147 kW
  • Highest torque
    320 Nm
    236 lb-ft
  • Lowest highway consumption
    5.2 L/100 km
    45.2 mpg US
    54.3 mpg UK
  • Best overall score
    48/100
  • Best performance score
    55/100
  • Best practicality score
    32/100

Specification comparison

Specification comparison
ModelAUDITT Roadster (8S)Facelift 201840 TFSIBMWZ4 (G29)20i
Power
197hp147kW
197hp147kW
Torque
320Nm236lb-ft
320Nm236lb-ft
Curb weight
1,435kg3,164lb
1,430kg3,153lb
Gross weight
1,715kg3,781lb
1,740kg3,836lb
Top speed
247 km/h
153 mph
240 km/h
149 mph
To 99% top speed
88.2s99% target: 245 km/h / 152 mph
Calculated
77.9s99% target: 238 km/h / 148 mph
Calculated
0-100 km/h
6.9s
6.6s
0-200 km/h
26.8s
Calculated
26.3s
Calculated
0-60 mph
6.5s
Calculated
6.3s
Calculated
Fuel consumption
6.3L/100 km37.3mpg US44.8mpg UK
6L/100 km39.2mpg US47.1mpg UK
Fuel consumption city
8.3L/100 km28.3mpg US34.0mpg UK
7.2L/100 km32.7mpg US39.2mpg UK
Fuel consumption highway
5.2L/100 km45.2mpg US54.3mpg UK
5.2L/100 km45.2mpg US54.3mpg UK
Quarter mile
14.9s
Calculated
14.6s
Calculated
Power-to-weight
137hp/t102kW/t62hp/1000 lb
Calculated
138hp/t103kW/t62hp/1000 lb
Calculated
Torque-to-weight
223Nm/t149lb-ft/ton
Calculated
224Nm/t150lb-ft/ton
Calculated
Estimated range
794km493mi
Calculated
867km539mi
Calculated
Displacement
1,984cc121cu in
1,998cc122cu in
Length
4,191mm165in
4,324mm170in
Width
1,832mm72in
1,864mm73in
Height
1,355mm53in
1,304mm51in
Wheelbase
2,505mm99in
2,470mm97in
Front track
1,572mm62in
1,609mm63in
Rear track
1,552mm61in
1,616mm64in
Ground clearance-
117mm5in
Trunk volume-
281L
Doors
2
2
Seats
2
2
Fuel tank
50L
52L
CO2 emissions
145g/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.

AUDI TT Roadster (8S) Facelift 2018 40 TFSIBMW Z4 (G29) 20iPowerTorque
  • AUDI TT Roadster (8S) Facelift 2018 40 TFSI: Power / Torque
  • BMW Z4 (G29) 20i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDITT Roadster (8S)Facelift 201840 TFSI4,400-6,000 rpm1,500-4,300 rpm6,250 rpm
BMWZ4 (G29)20i4,500-6,500 rpm1,450-4,200 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDITT Roadster (8S)Facelift 201840 TFSIBMWZ4 (G29)20i
Acceleration checkpoints
0-60 mph
0-97 km/h
6.5 s
6.3 s
0-100 km/h
0-62 mph
6.9 s
6.6 s
0-200 km/h
0-124 mph
26.8 s
26.3 s
Top speed
247 km/h
153 mph
240 km/h
149 mph
Drag race simulation
60 ft
18 m
2.5 s
2.4 s
330 ft
101 m
6.5 s
6.4 s
1/8 mile
201 m
9.8 s
9.6 s
1000 ft
305 m
12.6 s
12.3 s
1/4 mile
402 m
14.9 s
14.6 s
Trap speed
1/4 mile
402 m
156 km/h
97 mph
158 km/h
98 mph

Power comparison

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

Chart data table
VehicleValue
AUDITT Roadster (8S)Facelift 201840 TFSI
197 hp
147 kW
BMWZ4 (G29)20i
197 hp
147 kW

Torque comparison

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

Chart data table
VehicleValue
AUDITT Roadster (8S)Facelift 201840 TFSI
320 Nm
236 lb-ft
BMWZ4 (G29)20i
320 Nm
236 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDITT Roadster (8S)Facelift 201840 TFSI
1,435 kg
3,164 lb
BMWZ4 (G29)20i
1,430 kg
3,153 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
AUDITT Roadster (8S)Facelift 201840 TFSI
247 km/h
153 mph
BMWZ4 (G29)20i
240 km/h
149 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
AUDITT Roadster (8S)Facelift 201840 TFSI6.9 s
BMWZ4 (G29)20i6.6 s

The biggest 0-100 km/h difference is between BMW Z4 (G29) 20i and AUDI TT Roadster (8S) Facelift 2018 40 TFSI: 0.3 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
AUDITT Roadster (8S)Facelift 201840 TFSI
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
BMWZ4 (G29)20i
6.0 L/100 km
39.2 mpg US
47.1 mpg UK

Power-to-weight comparison

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

Chart data table
VehicleValue
AUDITT Roadster (8S)Facelift 201840 TFSI
137 hp/t
102 kW/t
7.3 kg/hp
BMWZ4 (G29)20i
138 hp/t
103 kW/t
7.3 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDITT Roadster (8S)Facelift 201840 TFSI
794 km
493 mi
BMWZ4 (G29)20i
867 km
539 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDITT Roadster (8S)Facelift 201840 TFSI
197 hp
147 kW
6.9 s
247 km/h
153 mph
BMWZ4 (G29)20i
197 hp
147 kW
6.6 s
240 km/h
149 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
AUDITT Roadster (8S)Facelift 201840 TFSI
Power
197 hp
147 kW
0-100 km/h6.9 s
Top speed
247 km/h
153 mph
Doors/seats
2 doors
2 seats
Trunk-
Length
4,191 mm
165.0 in
Height
1,355 mm
53.3 in
BMWZ4 (G29)20i
Power
197 hp
147 kW
0-100 km/h6.6 s
Top speed
240 km/h
149 mph
Doors/seats
2 doors
2 seats
Trunk
281 L
9.9 cu ft
Length
4,324 mm
170.2 in
Height
1,304 mm
51.3 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
AUDITT Roadster (8S)Facelift 201840 TFSI
Power
197 hp
147 kW
0-100 km/h6.9 s
Top speed
247 km/h
153 mph
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
BMWZ4 (G29)20i
Power
197 hp
147 kW
0-100 km/h6.6 s
Top speed
240 km/h
149 mph
6.0 L/100 km
39.2 mpg US
47.1 mpg UK

BMW Z4 (G29) 20i 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
AUDITT Roadster (8S)Facelift 201840 TFSI
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
6.9 s
BMWZ4 (G29)20i
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
6.6 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
AUDITT Roadster (8S)Facelift 201840 TFSI
137 hp/t
102 kW/t
7.3 kg/hp
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
BMWZ4 (G29)20i
138 hp/t
103 kW/t
7.3 kg/hp
6.0 L/100 km
39.2 mpg US
47.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDITT Roadster (8S)Facelift 201840 TFSIBMWZ4 (G29)20i
Power
197 hp
147 kW
197 hp
147 kW
Torque
320 Nm
236 lb-ft
320 Nm
236 lb-ft
Acceleration
6.9 s
6.6 s
Top speed
247 km/h
153 mph
240 km/h
149 mph
Lightness
1,435 kg
3,164 lb
1,430 kg
3,153 lb
Fuel consumption
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk-
Length
4,191 mm
165.0 in
Height
1,355 mm
53.3 in
Doors/seats
2 doors
2 seats
Trunk
281 L
9.9 cu ft
Length
4,324 mm
170.2 in
Height
1,304 mm
51.3 in
Range score
794 km
493 mi
867 km
539 mi
CO2 score
145 g/km
-
Trunk score
-
281 L
9.9 cu ft
Power-to-weight score
137 hp/t
102 kW/t
7.3 kg/hp
138 hp/t
103 kW/t
7.3 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
VehicleAUDI TT Roadster (8S) Facelift 2018 40 TFSIBMW Z4 (G29) 20i
Consumption6.3 L/100 km37.3 mpg US44.8 mpg UK6 L/100 km39.2 mpg US47.1 mpg UK
Cost / 100 km11.03 LC100 km10.50 LC100 km
Cost / 100 mi17.74 LC100 mi16.90 LC100 mi
Annual fuel used945 L250 US gal208 UK gal900 L238 US gal198 UK gal
Annual fuel cost1,654 LC/year1,575 LC/year

Head-to-head comparisons

BMW Z4 (G29) 20i

  • Is 5 kg lighter
  • Is 0.3 s quicker from 0-100 km/h
  • Uses 0.3 L/100 km less fuel
  • Has 0 hp/t better power-to-weight
  • Has 73 km (45 mi) more estimated range

Pros

  • Quickest 0-100 km/h in this comparison
  • 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
AUDI TT Roadster (8S) 40 TFSI
BMW Z4 (G29) 20i
Compare selected cars
2 vehicles selected

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