Car comparison

BMW Z4 (G29) M40ivsBMW Z4 Coupe (E86) 3.0 si

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

New comparison

BMW Z4 (G29)

M40i

340 hp2998 ccGasolineAWDAutomaticTurbochargedRoadster2018-2022
VS

BMW Z4 Coupe (E86)

3.0 si

265 hp2996 ccGasolineRWDManualNaturally aspiratedCoupe2006-2008

Comparison overview

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

Best choices

BMW Z4 (G29) M40i

  • Quickest 0-100 km/h
    4.5 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    340 hp
    254 kW
  • Highest torque
    500 Nm
    369 lb-ft
  • Best power-to-weight
    221 hp/t
    165 kW/t
    4.5 kg/hp
  • Lowest city consumption
    9.2 L/100 km
    25.6 mpg US
    30.7 mpg UK
  • Lowest highway consumption
    6.3 L/100 km
    37.3 mpg US
    44.8 mpg UK
  • Best overall score
    60/100
  • Best performance score
    73/100
  • Best economy score
    87/100

Specification comparison

Specification comparison
ModelBMWZ4 (G29)M40iBMWZ4 Coupe (E86)3.0 si
Power
340hp254kW
265hp198kW
Torque
500Nm369lb-ft
315Nm232lb-ft
Curb weight
1,535kg3,384lb
1,325kg2,921lb
Gross weight
1,860kg4,101lb
1,650kg3,638lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
57.6s99% target: 262 km/h / 163 mph
Calculated
74.0s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
4.5s
5.7s
0-200 km/h
15.2s
Calculated
19.4s
Calculated
0-60 mph
4.3s
Calculated
5.4s
Calculated
Fuel consumption
7.4L/100 km31.8mpg US38.2mpg UK
-
Fuel consumption city
9.2L/100 km25.6mpg US30.7mpg UK
13L/100 km18.1mpg US21.7mpg UK
Fuel consumption highway
6.3L/100 km37.3mpg US44.8mpg UK
6.5L/100 km36.2mpg US43.5mpg UK
Quarter mile
12.6s
Calculated
13.8s
Calculated
Power-to-weight
221hp/t165kW/t100hp/1000 lb
Calculated
200hp/t149kW/t91hp/1000 lb
Calculated
Torque-to-weight
326Nm/t218lb-ft/ton
Calculated
238Nm/t159lb-ft/ton
Calculated
Estimated range
703km437mi
Calculated
-
Displacement
2,998cc183cu in
2,996cc183cu in
Length
4,324mm170in
4,091mm161in
Width
1,864mm73in
1,781mm70in
Height
1,304mm51in
1,268mm50in
Wheelbase
2,470mm97in
2,495mm98in
Front track
1,594mm63in
1,473mm58in
Rear track
1,589mm63in
1,523mm60in
Ground clearance
114mm4in
-
Trunk volume
281L
285L
Max trunk volume-
340L
Doors
2
2
Seats
2
2
Fuel tank
52L
55L
CO2 emissions
168g/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 (G29) M40iBMW Z4 Coupe (E86) 3.0 siPowerTorque
  • BMW Z4 (G29) M40i: Power / Torque
  • BMW Z4 Coupe (E86) 3.0 si: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWZ4 (G29)M40i5,000-6,500 rpm1,600-4,500 rpm6,750 rpm
BMWZ4 Coupe (E86)3.0 si6,600 rpm2,750 rpm6,850 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMWZ4 (G29)M40iBMWZ4 Coupe (E86)3.0 si
Acceleration checkpoints
0-60 mph
0-97 km/h
4.3 s
5.4 s
0-100 km/h
0-62 mph
4.5 s
5.7 s
0-200 km/h
0-124 mph
15.2 s
19.4 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.1 s
2.3 s
330 ft
101 m
5.5 s
6.1 s
1/8 mile
201 m
8.2 s
9.1 s
1000 ft
305 m
10.6 s
11.6 s
1/4 mile
402 m
12.6 s
13.8 s
Trap speed
1/4 mile
402 m
184 km/h
114 mph
171 km/h
106 mph

Power comparison

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

Chart data table
VehicleValue
BMWZ4 (G29)M40i
340 hp
254 kW
BMWZ4 Coupe (E86)3.0 si
265 hp
198 kW

BMW Z4 (G29) M40i has 75 hp more than BMW Z4 Coupe (E86) 3.0 si.

The biggest power difference is between BMW Z4 Coupe (E86) 3.0 si and BMW Z4 (G29) M40i: 75 hp (56 kW).

Torque comparison

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

Chart data table
VehicleValue
BMWZ4 (G29)M40i
500 Nm
369 lb-ft
BMWZ4 Coupe (E86)3.0 si
315 Nm
232 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMWZ4 (G29)M40i
1,535 kg
3,384 lb
BMWZ4 Coupe (E86)3.0 si
1,325 kg
2,921 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 (G29)M40i
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMWZ4 Coupe (E86)3.0 si
Unrestricted
265 km/h165 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 (G29)M40i4.5 s
BMWZ4 Coupe (E86)3.0 si5.7 s

The biggest 0-100 km/h difference is between BMW Z4 (G29) M40i and BMW Z4 Coupe (E86) 3.0 si: 1.2 s.

Power-to-weight comparison

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

Chart data table
VehicleValue
BMWZ4 (G29)M40i
221 hp/t
165 kW/t
4.5 kg/hp
BMWZ4 Coupe (E86)3.0 si
200 hp/t
149 kW/t
5.0 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWZ4 (G29)M40i
340 hp
254 kW
4.5 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMWZ4 Coupe (E86)3.0 si
265 hp
198 kW
5.7 s
Unrestricted
265 km/h165 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 (G29)M40i
Power
340 hp
254 kW
0-100 km/h4.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 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
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

Detailed score breakdown

Detailed score breakdown
VehicleBMWZ4 (G29)M40iBMWZ4 Coupe (E86)3.0 si
Power
340 hp
254 kW
265 hp
198 kW
Torque
500 Nm
369 lb-ft
315 Nm
232 lb-ft
Acceleration
4.5 s
5.7 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,535 kg
3,384 lb
1,325 kg
2,921 lb
Fuel consumption
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
-
Practicality
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
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
Range score
703 km
437 mi
-
CO2 score
168 g/km
-
Trunk score
281 L
9.9 cu ft
285 L
10.1 cu ft
Power-to-weight score
221 hp/t
165 kW/t
4.5 kg/hp
200 hp/t
149 kW/t
5.0 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) M40i
Consumption7.4 L/100 km31.8 mpg US38.2 mpg UK
Cost / 100 km12.95 LC100 km
Cost / 100 mi20.84 LC100 mi
Annual fuel used1,110 L293 US gal244 UK gal
Annual fuel cost1,943 LC/year

Head-to-head comparisons

BMW Z4 (G29) M40i

  • Has 75 hp more
  • Has 185 Nm more
  • Is 1.2 s quicker from 0-100 km/h
  • Has 21 hp/t better power-to-weight

Pros

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

Cons

  • Heaviest
  • Smallest trunk

BMW Z4 Coupe (E86) 3.0 si

  • Is 210 kg lighter
  • Has 4 L more trunk volume

Pros

  • Lightest
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW Z4 (G29) M40i
BMW Z4 Coupe (E86) 3.0 si
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