Car comparison

BMW Z4 (E85) 3.0ivsBMW Z4 (G29) 20i

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

BMW Z4 (G29)

20i

197 hp1998 ccGasolineRWDManualTurbochargedRoadster2018-2022

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
  • Lightest
    1,365 kg
    3,009 lb
  • Best power-to-weight
    169 hp/t
    126 kW/t
    5.9 kg/hp
  • Largest trunk
    300 L
  • Best overall score
    50/100
  • Best performance score
    58/100
  • Best practicality score
    32/100

BMW Z4 (G29) 20i

  • Highest torque
    320 Nm
    236 lb-ft
  • Lowest combined fuel consumption
    6.9 L/100 km
    34.1 mpg US
    40.9 mpg UK
  • Lowest city consumption
    9.1 L/100 km
    25.8 mpg US
    31.0 mpg UK
  • Lowest highway consumption
    5.6 L/100 km
    42.0 mpg US
    50.4 mpg UK
  • Best estimated range
    754 km
    468 mi
  • Best economy score
    88/100

Specification comparison

Specification comparison
ModelBMWZ4 (E85)3.0iBMWZ4 (G29)20i
Power
231hp172kW
197hp147kW
Torque
300Nm221lb-ft
320Nm236lb-ft
Curb weight
1,365kg3,009lb
1,420kg3,131lb
Gross weight
1,590kg3,505lb
1,725kg3,803lb
Top speed
250 km/h
155 mph
241 km/h
150 mph
To 99% top speed
76.1s99% target: 248 km/h / 154 mph
Calculated
80.6s99% target: 239 km/h / 148 mph
Calculated
0-100 km/h
6.2s
6.8s
0-200 km/h
23.0s
Calculated
26.9s
Calculated
0-60 mph
5.9s
Calculated
6.5s
Calculated
Fuel consumption
9.5L/100 km24.8mpg US29.7mpg UK
6.9L/100 km34.1mpg US40.9mpg UK
Fuel consumption city
13.5L/100 km17.4mpg US20.9mpg UK
9.1L/100 km25.8mpg US31.0mpg UK
Fuel consumption highway
7.3L/100 km32.2mpg US38.7mpg UK
5.6L/100 km42mpg US50.4mpg UK
Quarter mile
14.3s
Calculated
14.8s
Calculated
Power-to-weight
169hp/t126kW/t77hp/1000 lb
Calculated
139hp/t103kW/t63hp/1000 lb
Calculated
Torque-to-weight
220Nm/t147lb-ft/ton
Calculated
225Nm/t151lb-ft/ton
Calculated
Estimated range
579km360mi
Calculated
754km468mi
Calculated
Displacement
2,979cc182cu in
1,998cc122cu in
Length
4,091mm161in
4,324mm170in
Width
1,781mm70in
1,864mm73in
Height
1,299mm51in
1,304mm51in
Wheelbase
2,495mm98in
2,470mm97in
Front track
1,473mm58in
1,609mm63in
Rear track
1,523mm60in
1,616mm64in
Ground clearance-
117mm5in
Trunk volume
300L
281L
Doors
2
2
Seats
2
2
Fuel tank
55L
52L

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) 3.0iBMW Z4 (G29) 20iPowerTorque
  • BMW Z4 (E85) 3.0i: Power / Torque
  • BMW Z4 (G29) 20i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWZ4 (E85)3.0i5,900 rpm3,500 rpm6,150 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
MetricBMWZ4 (E85)3.0iBMWZ4 (G29)20i
Acceleration checkpoints
0-60 mph
0-97 km/h
5.9 s
6.5 s
0-100 km/h
0-62 mph
6.2 s
6.8 s
0-200 km/h
0-124 mph
23.0 s
26.9 s
Top speed
250 km/h
155 mph
241 km/h
150 mph
Drag race simulation
60 ft
18 m
2.4 s
2.5 s
330 ft
101 m
6.3 s
6.5 s
1/8 mile
201 m
9.4 s
9.7 s
1000 ft
305 m
12.0 s
12.5 s
1/4 mile
402 m
14.3 s
14.8 s
Trap speed
1/4 mile
402 m
163 km/h
102 mph
157 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
BMWZ4 (G29)20i
197 hp
147 kW

BMW Z4 (E85) 3.0i has 34 hp more than BMW Z4 (G29) 20i.

The biggest power difference is between BMW Z4 (G29) 20i and BMW Z4 (E85) 3.0i: 34 hp (25 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
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
BMWZ4 (E85)3.0i
1,365 kg
3,009 lb
BMWZ4 (G29)20i
1,420 kg
3,131 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
BMWZ4 (G29)20i
241 km/h
150 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
BMWZ4 (G29)20i6.8 s

The biggest 0-100 km/h difference is between BMW Z4 (E85) 3.0i and BMW Z4 (G29) 20i: 0.6 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
BMWZ4 (G29)20i
6.9 L/100 km
34.1 mpg US
40.9 mpg UK

The biggest fuel consumption difference is between BMW Z4 (G29) 20i and BMW Z4 (E85) 3.0i: 2.6 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 (E85)3.0i
169 hp/t
126 kW/t
5.9 kg/hp
BMWZ4 (G29)20i
139 hp/t
103 kW/t
7.2 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
BMWZ4 (G29)20i
754 km
468 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
BMWZ4 (G29)20i
197 hp
147 kW
6.8 s
241 km/h
150 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
BMWZ4 (G29)20i
Power
197 hp
147 kW
0-100 km/h6.8 s
Top speed
241 km/h
150 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
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
BMWZ4 (G29)20i
Power
197 hp
147 kW
0-100 km/h6.8 s
Top speed
241 km/h
150 mph
6.9 L/100 km
34.1 mpg US
40.9 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
BMWZ4 (G29)20i
6.9 L/100 km
34.1 mpg US
40.9 mpg UK
6.8 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
BMWZ4 (G29)20i
139 hp/t
103 kW/t
7.2 kg/hp
6.9 L/100 km
34.1 mpg US
40.9 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMWZ4 (E85)3.0iBMWZ4 (G29)20i
Power
231 hp
172 kW
197 hp
147 kW
Torque
300 Nm
221 lb-ft
320 Nm
236 lb-ft
Acceleration
6.2 s
6.8 s
Top speed
250 km/h
155 mph
241 km/h
150 mph
Lightness
1,365 kg
3,009 lb
1,420 kg
3,131 lb
Fuel consumption
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
6.9 L/100 km
34.1 mpg US
40.9 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
281 L
9.9 cu ft
Length
4,324 mm
170.2 in
Height
1,304 mm
51.3 in
Range score
579 km
360 mi
754 km
468 mi
Trunk score
300 L
10.6 cu ft
281 L
9.9 cu ft
Power-to-weight score
169 hp/t
126 kW/t
5.9 kg/hp
139 hp/t
103 kW/t
7.2 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) 3.0iBMW Z4 (G29) 20i
Consumption9.5 L/100 km24.8 mpg US29.7 mpg UK6.9 L/100 km34.1 mpg US40.9 mpg UK
Cost / 100 km16.63 LC100 km12.08 LC100 km
Cost / 100 mi26.76 LC100 mi19.43 LC100 mi
Annual fuel used1,425 L376 US gal313 UK gal1,035 L273 US gal228 UK gal
Annual fuel cost2,494 LC/year1,811 LC/year

Head-to-head comparisons

BMW Z4 (E85) 3.0i

  • Has 34 hp more
  • Is 55 kg lighter
  • Is 0.6 s quicker from 0-100 km/h
  • Has 9 km/h (6 mph) higher top speed
  • Has 30 hp/t better power-to-weight
  • Has 19 L more trunk volume

Pros

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

Cons

  • Highest combined fuel consumption

BMW Z4 (G29) 20i

  • Has 20 Nm more
  • Uses 2.6 L/100 km less fuel
  • Has 175 km (109 mi) more estimated range

Pros

  • Highest torque
  • 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
BMW Z4 (G29) 20i
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