Car comparison

BMW Z4 Coupe (E86) 3.0 sivsMazda RX-8 1.3 Wankel

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

Mazda RX-8

1.3 Wankel

250 hp1308 ccGasolineRWDManualNaturally aspiratedCoupe2003-2009

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
  • Highest torque
    315 Nm
    232 lb-ft
  • Lightest
    1,325 kg
    2,921 lb
  • Best power-to-weight
    200 hp/t
    149 kW/t
    5.0 kg/hp
  • Lowest city consumption
    13.0 L/100 km
    18.1 mpg US
    21.7 mpg UK
  • Lowest highway consumption
    6.5 L/100 km
    36.2 mpg US
    43.5 mpg UK
  • Best performance score
    63/100

Mazda RX-8 1.3 Wankel

  • Largest trunk
    290 L
  • Best overall score
    56/100
  • Best economy score
    76/100
  • Best practicality score
    53/100

Specification comparison

Specification comparison
ModelBMWZ4 Coupe (E86)3.0 siMazdaRX-81.3 Wankel
Power
265hp198kW
250hp186kW
Torque
315Nm232lb-ft
216Nm159lb-ft
Curb weight
1,325kg2,921lb
1,345kg2,965lb
Gross weight
1,650kg3,638lb
1,820kg4,012lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
74.5s99% target: 262 km/h / 163 mph
Calculated
84.5s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.7s
6.5s
0-200 km/h
19.5s
Calculated
22.9s
Calculated
0-60 mph
5.4s
Calculated
6.2s
Calculated
Fuel consumption-
11.4L/100 km20.6mpg US24.8mpg UK
Fuel consumption city
13L/100 km18.1mpg US21.7mpg UK
15.8L/100 km14.9mpg US17.9mpg UK
Fuel consumption highway
6.5L/100 km36.2mpg US43.5mpg UK
8.9L/100 km26.4mpg US31.7mpg UK
Quarter mile
13.8s
Calculated
14.5s
Calculated
Power-to-weight
200hp/t149kW/t91hp/1000 lb
Calculated
186hp/t139kW/t84hp/1000 lb
Calculated
Torque-to-weight
238Nm/t159lb-ft/ton
Calculated
161Nm/t107lb-ft/ton
Calculated
Estimated range-
535km332mi
Calculated
Displacement
2,996cc183cu in
1,308cc80cu in
Length
4,091mm161in
4,325mm170in
Width
1,781mm70in
1,780mm70in
Height
1,268mm50in
1,330mm52in
Wheelbase
2,495mm98in
2,700mm106in
Front track
1,473mm58in
1,490mm59in
Rear track
1,523mm60in
1,500mm59in
Trunk volume
285L
290L
Max trunk volume
340L
-
Doors
2
4
Seats
2
4
Fuel tank
55L
61L

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 siMazda RX-8 1.3 WankelPowerTorque
  • BMW Z4 Coupe (E86) 3.0 si: Power / Torque
  • Mazda RX-8 1.3 Wankel: 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
MazdaRX-81.3 Wankel8,500 rpm7,500 rpm8,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMWZ4 Coupe (E86)3.0 siMazdaRX-81.3 Wankel
Acceleration checkpoints
0-60 mph
0-97 km/h
5.4 s
6.2 s
0-100 km/h
0-62 mph
5.7 s
6.5 s
0-200 km/h
0-124 mph
19.5 s
22.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.3 s
2.5 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
14.5 s
Trap speed
1/4 mile
402 m
171 km/h
106 mph
163 km/h
101 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
MazdaRX-81.3 Wankel
250 hp
186 kW

BMW Z4 Coupe (E86) 3.0 si has 15 hp more than Mazda RX-8 1.3 Wankel.

The biggest power difference is between Mazda RX-8 1.3 Wankel and BMW Z4 Coupe (E86) 3.0 si: 15 hp (11 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
MazdaRX-81.3 Wankel
216 Nm
159 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
MazdaRX-81.3 Wankel
1,345 kg
2,965 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
MazdaRX-81.3 Wankel
Unrestricted
260 km/h162 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 Coupe (E86)3.0 si5.7 s
MazdaRX-81.3 Wankel6.5 s

The biggest 0-100 km/h difference is between BMW Z4 Coupe (E86) 3.0 si and Mazda RX-8 1.3 Wankel: 0.8 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
MazdaRX-81.3 Wankel
186 hp/t
139 kW/t
5.4 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
MazdaRX-81.3 Wankel
250 hp
186 kW
6.5 s
Unrestricted
260 km/h162 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 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
MazdaRX-81.3 Wankel
Power
250 hp
186 kW
0-100 km/h6.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
4 seats
Trunk
290 L
10.2 cu ft
Length
4,325 mm
170.3 in
Height
1,330 mm
52.4 in

Detailed score breakdown

Detailed score breakdown
VehicleBMWZ4 Coupe (E86)3.0 siMazdaRX-81.3 Wankel
Power
265 hp
198 kW
250 hp
186 kW
Torque
315 Nm
232 lb-ft
216 Nm
159 lb-ft
Acceleration
5.7 s
6.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,325 kg
2,921 lb
1,345 kg
2,965 lb
Fuel consumption
-
11.4 L/100 km
20.6 mpg US
24.8 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
4 doors
4 seats
Trunk
290 L
10.2 cu ft
Length
4,325 mm
170.3 in
Height
1,330 mm
52.4 in
Range score
-
535 km
332 mi
Trunk score
285 L
10.1 cu ft
290 L
10.2 cu ft
Power-to-weight score
200 hp/t
149 kW/t
5.0 kg/hp
186 hp/t
139 kW/t
5.4 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
VehicleMazda RX-8 1.3 Wankel
Consumption11.4 L/100 km20.6 mpg US24.8 mpg UK
Cost / 100 km19.95 LC100 km
Cost / 100 mi32.11 LC100 mi
Annual fuel used1,710 L452 US gal376 UK gal
Annual fuel cost2,993 LC/year

Head-to-head comparisons

BMW Z4 Coupe (E86) 3.0 si

  • Has 15 hp more
  • Has 99 Nm more
  • Is 20 kg lighter
  • Is 0.8 s quicker from 0-100 km/h
  • Has 5 km/h (3 mph) higher top speed
  • Has 14 hp/t better power-to-weight

Pros

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

Cons

  • Smallest trunk

Mazda RX-8 1.3 Wankel

  • Has 5 L more trunk volume

Pros

  • Largest trunk

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW Z4 Coupe (E86) 3.0 si
Mazda RX-8 1.3 Wankel
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BMW Z4 Coupe (E86) 3.0 si vs Mazda RX-8 1.3 Wankel - car comparison - FastVsFaster