Car comparison

BMW 1 Series Coupe (E82) 125ivsMazda RX-8 1.3 Wankel

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

New comparison

BMW 1 Series Coupe (E82)

125i

218 hp2996 ccGasolineRWDManualNaturally aspiratedCoupe2009-2011
VS

Mazda RX-8

1.3 Wankel

231 hp1308 ccGasolineRWDManualNaturally aspiratedCoupe2003-2012

Comparison overview

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

Best choices

BMW 1 Series Coupe (E82) 125i

  • Quickest 0-100 km/h
    6.4 s
  • Fastest top speed
    245 km/h
    152 mph
  • Highest torque
    270 Nm
    199 lb-ft
  • Lowest combined fuel consumption
    7.9 L/100 km
    29.8 mpg US
    35.8 mpg UK
  • Lowest city consumption
    11.4 L/100 km
    20.6 mpg US
    24.8 mpg UK
  • Lowest highway consumption
    5.9 L/100 km
    39.9 mpg US
    47.9 mpg UK
  • Lowest CO2 emissions
    190 g/km
  • Best estimated range
    671 km
    417 mi
  • Largest trunk
    370 L
  • Best overall score
    54/100
  • Best performance score
    56/100
  • Best economy score
    86/100
  • Best practicality score
    50/100

Mazda RX-8 1.3 Wankel

  • Most powerful
    231 hp
    172 kW
  • Lightest
    1,379 kg
    3,040 lb
  • Best power-to-weight
    168 hp/t
    125 kW/t
    6.0 kg/hp

Specification comparison

Specification comparison
ModelBMW1 Series Coupe (E82)125iMazdaRX-81.3 Wankel
Power
218hp163kW
231hp172kW
Torque
270Nm199lb-ft
211Nm156lb-ft
Curb weight
1,405kg3,097lb
1,379kg3,040lb
Gross weight
1,845kg4,068lb
1,815kg4,001lb
Top speed
245 km/h
152 mph
234 km/h
145 mph
To 99% top speed
80.9s99% target: 243 km/h / 151 mph
Calculated
72.6s99% target: 232 km/h / 144 mph
Calculated
0-100 km/h
6.4s
6.4s
0-200 km/h
25.2s
Calculated
26.7s
Calculated
0-60 mph
6.1s
Calculated
6.1s
Calculated
Fuel consumption
7.9L/100 km29.8mpg US35.8mpg UK
11.2L/100 km21mpg US25.2mpg UK
Fuel consumption city
11.4L/100 km20.6mpg US24.8mpg UK
15.6L/100 km15.1mpg US18.1mpg UK
Fuel consumption highway
5.9L/100 km39.9mpg US47.9mpg UK
8.7L/100 km27mpg US32.5mpg UK
Quarter mile
14.5s
Calculated
14.5s
Calculated
Power-to-weight
155hp/t116kW/t70hp/1000 lb
Calculated
168hp/t125kW/t76hp/1000 lb
Calculated
Torque-to-weight
192Nm/t129lb-ft/ton
Calculated
153Nm/t102lb-ft/ton
Calculated
Estimated range
671km417mi
Calculated
545km338mi
Calculated
Displacement
2,996cc183cu in
1,308cc80cu in
Length
4,360mm172in
4,430mm174in
Width
1,748mm69in
1,770mm70in
Height
1,423mm56in
1,340mm53in
Wheelbase
2,660mm105in
2,700mm106in
Front track
1,474mm58in
1,500mm59in
Rear track
1,507mm59in
1,505mm59in
Ground clearance
147mm6in
140mm6in
Trunk volume
370L
290L
Doors
2
2
Seats
4
4
Fuel tank
53L
61L
CO2 emissions
190g/km
284g/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 1 Series Coupe (E82) 125iMazda RX-8 1.3 WankelPowerTorque
  • BMW 1 Series Coupe (E82) 125i: Power / Torque
  • Mazda RX-8 1.3 Wankel: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW1 Series Coupe (E82)125i6,100 rpm2,500-4,250 rpm6,350 rpm
MazdaRX-81.3 Wankel8,200 rpm5,500 rpm9,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW1 Series Coupe (E82)125iMazdaRX-81.3 Wankel
Acceleration checkpoints
0-60 mph
0-97 km/h
6.1 s
6.1 s
0-100 km/h
0-62 mph
6.4 s
6.4 s
0-200 km/h
0-124 mph
25.2 s
26.7 s
Top speed
245 km/h
152 mph
234 km/h
145 mph
Drag race simulation
60 ft
18 m
2.4 s
2.4 s
330 ft
101 m
6.3 s
6.3 s
1/8 mile
201 m
9.5 s
9.5 s
1000 ft
305 m
12.2 s
12.2 s
1/4 mile
402 m
14.5 s
14.5 s
Trap speed
1/4 mile
402 m
160 km/h
99 mph
159 km/h
99 mph

Power comparison

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

Chart data table
VehicleValue
BMW1 Series Coupe (E82)125i
218 hp
163 kW
MazdaRX-81.3 Wankel
231 hp
172 kW

Mazda RX-8 1.3 Wankel has 13 hp more than BMW 1 Series Coupe (E82) 125i.

The biggest power difference is between BMW 1 Series Coupe (E82) 125i and Mazda RX-8 1.3 Wankel: 13 hp (10 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW1 Series Coupe (E82)125i
270 Nm
199 lb-ft
MazdaRX-81.3 Wankel
211 Nm
156 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW1 Series Coupe (E82)125i
1,405 kg
3,097 lb
MazdaRX-81.3 Wankel
1,379 kg
3,040 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
BMW1 Series Coupe (E82)125i
245 km/h
152 mph
MazdaRX-81.3 Wankel
234 km/h
145 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
BMW1 Series Coupe (E82)125i6.4 s
MazdaRX-81.3 Wankel6.4 s

Although Mazda RX-8 1.3 Wankel has more power, BMW 1 Series Coupe (E82) 125i is quicker from 0-100 km/h.

Fuel consumption comparison

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

Chart data table
VehicleValue
BMW1 Series Coupe (E82)125i
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
MazdaRX-81.3 Wankel
11.2 L/100 km
21.0 mpg US
25.2 mpg UK

The biggest fuel consumption difference is between BMW 1 Series Coupe (E82) 125i and Mazda RX-8 1.3 Wankel: 3.3 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
BMW1 Series Coupe (E82)125i
155 hp/t
116 kW/t
6.4 kg/hp
MazdaRX-81.3 Wankel
168 hp/t
125 kW/t
6.0 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW1 Series Coupe (E82)125i
671 km
417 mi
MazdaRX-81.3 Wankel
545 km
338 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW1 Series Coupe (E82)125i
218 hp
163 kW
6.4 s
245 km/h
152 mph
MazdaRX-81.3 Wankel
231 hp
172 kW
6.4 s
234 km/h
145 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
BMW1 Series Coupe (E82)125i
Power
218 hp
163 kW
0-100 km/h6.4 s
Top speed
245 km/h
152 mph
Doors/seats
2 doors
4 seats
Trunk
370 L
13.1 cu ft
Length
4,360 mm
171.7 in
Height
1,423 mm
56.0 in
MazdaRX-81.3 Wankel
Power
231 hp
172 kW
0-100 km/h6.4 s
Top speed
234 km/h
145 mph
Doors/seats
2 doors
4 seats
Trunk
290 L
10.2 cu ft
Length
4,430 mm
174.4 in
Height
1,340 mm
52.8 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
BMW1 Series Coupe (E82)125i
Power
218 hp
163 kW
0-100 km/h6.4 s
Top speed
245 km/h
152 mph
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
MazdaRX-81.3 Wankel
Power
231 hp
172 kW
0-100 km/h6.4 s
Top speed
234 km/h
145 mph
11.2 L/100 km
21.0 mpg US
25.2 mpg UK

BMW 1 Series Coupe (E82) 125i 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
BMW1 Series Coupe (E82)125i
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
6.4 s
MazdaRX-81.3 Wankel
11.2 L/100 km
21.0 mpg US
25.2 mpg UK
6.4 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
BMW1 Series Coupe (E82)125i
155 hp/t
116 kW/t
6.4 kg/hp
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
MazdaRX-81.3 Wankel
168 hp/t
125 kW/t
6.0 kg/hp
11.2 L/100 km
21.0 mpg US
25.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW1 Series Coupe (E82)125iMazdaRX-81.3 Wankel
Power
218 hp
163 kW
231 hp
172 kW
Torque
270 Nm
199 lb-ft
211 Nm
156 lb-ft
Acceleration
6.4 s
6.4 s
Top speed
245 km/h
152 mph
234 km/h
145 mph
Lightness
1,405 kg
3,097 lb
1,379 kg
3,040 lb
Fuel consumption
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
11.2 L/100 km
21.0 mpg US
25.2 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
370 L
13.1 cu ft
Length
4,360 mm
171.7 in
Height
1,423 mm
56.0 in
Doors/seats
2 doors
4 seats
Trunk
290 L
10.2 cu ft
Length
4,430 mm
174.4 in
Height
1,340 mm
52.8 in
Range score
671 km
417 mi
545 km
338 mi
CO2 score
190 g/km
284 g/km
Trunk score
370 L
13.1 cu ft
290 L
10.2 cu ft
Power-to-weight score
155 hp/t
116 kW/t
6.4 kg/hp
168 hp/t
125 kW/t
6.0 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 1 Series Coupe (E82) 125iMazda RX-8 1.3 Wankel
Consumption7.9 L/100 km29.8 mpg US35.8 mpg UK11.2 L/100 km21 mpg US25.2 mpg UK
Cost / 100 km13.83 LC100 km19.60 LC100 km
Cost / 100 mi22.25 LC100 mi31.54 LC100 mi
Annual fuel used1,185 L313 US gal261 UK gal1,680 L444 US gal370 UK gal
Annual fuel cost2,074 LC/year2,940 LC/year

Head-to-head comparisons

BMW 1 Series Coupe (E82) 125i

  • Has 59 Nm more
  • Has 11 km/h (7 mph) higher top speed
  • Uses 3.3 L/100 km less fuel
  • Has 126 km (78 mi) more estimated range
  • Has 80 L more trunk volume
  • Emits 94 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Lowest power
  • Heaviest

Mazda RX-8 1.3 Wankel

  • Has 13 hp more
  • Is 26 kg lighter
  • Has 12 hp/t better power-to-weight

Pros

  • Most powerful
  • Lightest
  • Best power-to-weight ratio

Cons

  • Highest combined fuel consumption
  • Lowest top speed
  • Smallest trunk
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 1 Series Coupe (E82) 125i
Mazda RX-8 1.3 Wankel
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BMW 1 Series Coupe (E82) 125i vs Mazda RX-8 1.3 Wankel - car comparison - FastVsFaster