Car comparison

BMW Z4 Coupe (E86) 3.0 sivsBMW Z4 (G29) 20i

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

New comparison

BMW Z4 Coupe (E86)

3.0 si

265 hp2996 ccGasolineRWDManualNaturally aspiratedCoupe2006-2008
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 Coupe (E86) 3.0 si

  • Quickest 0-100 km/h
    5.7 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    265 hp
    198 kW
  • Lightest
    1,325 kg
    2,921 lb
  • Best power-to-weight
    200 hp/t
    149 kW/t
    5.0 kg/hp
  • Largest trunk
    285 L
  • Best overall score
    55/100
  • Best performance score
    63/100
  • Best practicality score
    37/100

BMW Z4 (G29) 20i

  • Highest torque
    320 Nm
    236 lb-ft
  • Lowest city consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Lowest highway consumption
    5.2 L/100 km
    45.2 mpg US
    54.3 mpg UK
  • Best economy score
    91/100

Specification comparison

Specification comparison
ModelBMWZ4 Coupe (E86)3.0 siBMWZ4 (G29)20i
Power
265hp198kW
197hp147kW
Torque
315Nm232lb-ft
320Nm236lb-ft
Curb weight
1,325kg2,921lb
1,430kg3,153lb
Gross weight
1,650kg3,638lb
1,740kg3,836lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
240 km/h
149 mph
To 99% top speed
74.0s99% target: 262 km/h / 163 mph
Calculated
77.9s99% target: 238 km/h / 148 mph
Calculated
0-100 km/h
5.7s
6.6s
0-200 km/h
19.4s
Calculated
26.3s
Calculated
0-60 mph
5.4s
Calculated
6.3s
Calculated
Fuel consumption-
6L/100 km39.2mpg US47.1mpg UK
Fuel consumption city
13L/100 km18.1mpg US21.7mpg UK
7.2L/100 km32.7mpg US39.2mpg UK
Fuel consumption highway
6.5L/100 km36.2mpg US43.5mpg UK
5.2L/100 km45.2mpg US54.3mpg UK
Quarter mile
13.8s
Calculated
14.6s
Calculated
Power-to-weight
200hp/t149kW/t91hp/1000 lb
Calculated
138hp/t103kW/t62hp/1000 lb
Calculated
Torque-to-weight
238Nm/t159lb-ft/ton
Calculated
224Nm/t150lb-ft/ton
Calculated
Estimated range-
867km539mi
Calculated
Displacement
2,996cc183cu in
1,998cc122cu in
Length
4,091mm161in
4,324mm170in
Width
1,781mm70in
1,864mm73in
Height
1,268mm50in
1,304mm51in
Wheelbase
2,495mm98in
2,470mm97in
Front track
1,473mm58in
1,609mm63in
Rear track
1,523mm60in
1,616mm64in
Ground clearance-
117mm5in
Trunk volume
285L
281L
Max trunk volume
340L
-
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 Coupe (E86) 3.0 siBMW Z4 (G29) 20iPowerTorque
  • BMW Z4 Coupe (E86) 3.0 si: Power / Torque
  • BMW Z4 (G29) 20i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWZ4 Coupe (E86)3.0 si6,600 rpm2,750 rpm6,850 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 Coupe (E86)3.0 siBMWZ4 (G29)20i
Acceleration checkpoints
0-60 mph
0-97 km/h
5.4 s
6.3 s
0-100 km/h
0-62 mph
5.7 s
6.6 s
0-200 km/h
0-124 mph
19.4 s
26.3 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
240 km/h
149 mph
Drag race simulation
60 ft
18 m
2.3 s
2.4 s
330 ft
101 m
6.1 s
6.4 s
1/8 mile
201 m
9.1 s
9.6 s
1000 ft
305 m
11.6 s
12.3 s
1/4 mile
402 m
13.8 s
14.6 s
Trap speed
1/4 mile
402 m
171 km/h
106 mph
158 km/h
98 mph

Power comparison

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

Chart data table
VehicleValue
BMWZ4 Coupe (E86)3.0 si
265 hp
198 kW
BMWZ4 (G29)20i
197 hp
147 kW

BMW Z4 Coupe (E86) 3.0 si has 68 hp more than BMW Z4 (G29) 20i.

The biggest power difference is between BMW Z4 (G29) 20i and BMW Z4 Coupe (E86) 3.0 si: 68 hp (51 kW).

Torque comparison

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

Chart data table
VehicleValue
BMWZ4 Coupe (E86)3.0 si
315 Nm
232 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 Coupe (E86)3.0 si
1,325 kg
2,921 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
BMWZ4 Coupe (E86)3.0 si
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 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
BMWZ4 Coupe (E86)3.0 si5.7 s
BMWZ4 (G29)20i6.6 s

The biggest 0-100 km/h difference is between BMW Z4 Coupe (E86) 3.0 si and BMW Z4 (G29) 20i: 0.9 s.

Power-to-weight comparison

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

Chart data table
VehicleValue
BMWZ4 Coupe (E86)3.0 si
200 hp/t
149 kW/t
5.0 kg/hp
BMWZ4 (G29)20i
138 hp/t
103 kW/t
7.3 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWZ4 Coupe (E86)3.0 si
265 hp
198 kW
5.7 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 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
BMWZ4 Coupe (E86)3.0 si
Power
265 hp
198 kW
0-100 km/h5.7 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
285 L
10.1 cu ft
Length
4,091 mm
161.1 in
Height
1,268 mm
49.9 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

Detailed score breakdown

Detailed score breakdown
VehicleBMWZ4 Coupe (E86)3.0 siBMWZ4 (G29)20i
Power
265 hp
198 kW
197 hp
147 kW
Torque
315 Nm
232 lb-ft
320 Nm
236 lb-ft
Acceleration
5.7 s
6.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
240 km/h
149 mph
Lightness
1,325 kg
2,921 lb
1,430 kg
3,153 lb
Fuel consumption
-
6.0 L/100 km
39.2 mpg US
47.1 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
285 L
10.1 cu ft
Length
4,091 mm
161.1 in
Height
1,268 mm
49.9 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
-
867 km
539 mi
Trunk score
285 L
10.1 cu ft
281 L
9.9 cu ft
Power-to-weight score
200 hp/t
149 kW/t
5.0 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
VehicleBMW Z4 (G29) 20i
Consumption6 L/100 km39.2 mpg US47.1 mpg UK
Cost / 100 km10.50 LC100 km
Cost / 100 mi16.90 LC100 mi
Annual fuel used900 L238 US gal198 UK gal
Annual fuel cost1,575 LC/year

Head-to-head comparisons

BMW Z4 Coupe (E86) 3.0 si

  • Has 68 hp more
  • Is 105 kg lighter
  • Is 0.9 s quicker from 0-100 km/h
  • Has 25 km/h (16 mph) higher top speed
  • Has 62 hp/t better power-to-weight
  • Has 4 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

BMW Z4 (G29) 20i

  • Has 5 Nm more

Pros

  • Highest torque

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 Coupe (E86) 3.0 si
BMW Z4 (G29) 20i
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