Car comparison

BMW Z4 (G29 LCI) · Facelift 2022 M40ivsMercedes-Benz SL (R231) · Facelift 2016 SL 400 V6

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

New comparison

BMW Z4 (G29 LCI) · Facelift 2022

M40i

340 hp2998 ccGasolineRWDManualTurbochargedRoadster2024-2026
VS

Mercedes-Benz SL (R231) · Facelift 2016

SL 400 V6

367 hp2996 ccGasolineRWDAutomaticTwin-turboRoadster2019-2020

Comparison overview

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

Best choices

Mercedes-Benz SL (R231) Facelift 2016 SL 400 V6

  • Most powerful
    367 hp
    274 kW
  • Best power-to-weight
    221 hp/t
    165 kW/t
    4.5 kg/hp
  • Lowest combined fuel consumption
    8.6 L/100 km
    27.4 mpg US
    32.8 mpg UK
  • Best estimated range
    872 km
    542 mi
  • Largest trunk
    364 L
  • Best overall score
    61/100
  • Best economy score
    84/100
  • Best practicality score
    35/100

BMW Z4 (G29 LCI) Facelift 2022 M40i

  • Quickest 0-100 km/h
    4.6 s
  • Fastest top speed
    270 km/h
    168 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Highest torque
    500 Nm
    369 lb-ft
  • Lightest
    1,550 kg
    3,417 lb
  • Best performance score
    73/100

Specification comparison

Specification comparison
ModelBMWZ4 (G29 LCI)Facelift 2022M40iMercedes-BenzSL (R231)Facelift 2016SL 400 V6
Power
340hp254kW
367hp274kW
Torque
500Nm369lb-ft
500Nm369lb-ft
Curb weight
1,550kg3,417lb
1,660kg3,660lb
Gross weight
1,860kg4,101lb
2,115kg4,663lb
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
60.7s99% target: 267 km/h / 166 mph
Calculated
66.2s99% target: 267 km/h / 166 mph
Calculated
0-100 km/h
4.6s
4.9s
0-200 km/h
15.3s
Calculated
16.5s
Calculated
0-60 mph
4.4s
Calculated
4.7s
Calculated
Fuel consumption
8.7L/100 km27mpg US32.5mpg UK
8.6L/100 km27.4mpg US32.8mpg UK
Fuel consumption city-
11.1L/100 km21.2mpg US25.4mpg UK
Fuel consumption highway-
7.1L/100 km33.1mpg US39.8mpg UK
Quarter mile
12.7s
Calculated
13.0s
Calculated
Power-to-weight
219hp/t164kW/t99hp/1000 lb
Calculated
221hp/t165kW/t100hp/1000 lb
Calculated
Torque-to-weight
323Nm/t216lb-ft/ton
Calculated
301Nm/t202lb-ft/ton
Calculated
Estimated range
598km371mi
Calculated
872km542mi
Calculated
Displacement
2,998cc183cu in
2,996cc183cu in
Length
4,324mm170in
4,631mm182in
Width
1,864mm73in
1,877mm74in
Height
1,304mm51in
1,315mm52in
Wheelbase
2,470mm97in
2,585mm102in
Front track
1,594mm63in
1,600mm63in
Rear track
1,589mm63in
1,604mm63in
Ground clearance
114mm4in
-
Trunk volume
281L
364L
Max trunk volume-
485L
Doors
2
2
Seats
2
2
Fuel tank
52L
75L

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 LCI) Facelift 2022 M40iMercedes-Benz SL (R231) Facelift 2016 SL 400 V6PowerTorque
  • BMW Z4 (G29 LCI) Facelift 2022 M40i: Power / Torque
  • Mercedes-Benz SL (R231) Facelift 2016 SL 400 V6: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWZ4 (G29 LCI)Facelift 2022M40i5,000-6,500 rpm1,600-4,500 rpm6,750 rpm
Mercedes-BenzSL (R231)Facelift 2016SL 400 V65,500-6,000 rpm2,000-4,200 rpm6,300 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMWZ4 (G29 LCI)Facelift 2022M40iMercedes-BenzSL (R231)Facelift 2016SL 400 V6
Acceleration checkpoints
0-60 mph
0-97 km/h
4.4 s
4.7 s
0-100 km/h
0-62 mph
4.6 s
4.9 s
0-200 km/h
0-124 mph
15.3 s
16.5 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Limited
Drag race simulation
60 ft
18 m
2.1 s
2.2 s
330 ft
101 m
5.5 s
5.7 s
1/8 mile
201 m
8.3 s
8.5 s
1000 ft
305 m
10.7 s
10.9 s
1/4 mile
402 m
12.7 s
13.0 s
Trap speed
1/4 mile
402 m
184 km/h
114 mph
179 km/h
112 mph

Power comparison

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

Chart data table
VehicleValue
BMWZ4 (G29 LCI)Facelift 2022M40i
340 hp
254 kW
Mercedes-BenzSL (R231)Facelift 2016SL 400 V6
367 hp
274 kW

Mercedes-Benz SL (R231) Facelift 2016 SL 400 V6 has 27 hp more than BMW Z4 (G29 LCI) Facelift 2022 M40i.

The biggest power difference is between BMW Z4 (G29 LCI) Facelift 2022 M40i and Mercedes-Benz SL (R231) Facelift 2016 SL 400 V6: 27 hp (20 kW).

Torque comparison

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

Chart data table
VehicleValue
BMWZ4 (G29 LCI)Facelift 2022M40i
500 Nm
369 lb-ft
Mercedes-BenzSL (R231)Facelift 2016SL 400 V6
500 Nm
369 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMWZ4 (G29 LCI)Facelift 2022M40i
1,550 kg
3,417 lb
Mercedes-BenzSL (R231)Facelift 2016SL 400 V6
1,660 kg
3,660 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 LCI)Facelift 2022M40i
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Mercedes-BenzSL (R231)Facelift 2016SL 400 V6
Unrestricted
270 km/h168 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 LCI)Facelift 2022M40i4.6 s
Mercedes-BenzSL (R231)Facelift 2016SL 400 V64.9 s

Although Mercedes-Benz SL (R231) Facelift 2016 SL 400 V6 has more power, BMW Z4 (G29 LCI) Facelift 2022 M40i is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between BMW Z4 (G29 LCI) Facelift 2022 M40i and Mercedes-Benz SL (R231) Facelift 2016 SL 400 V6: 0.3 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 (G29 LCI)Facelift 2022M40i
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
Mercedes-BenzSL (R231)Facelift 2016SL 400 V6
8.6 L/100 km
27.4 mpg US
32.8 mpg UK

Power-to-weight comparison

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

Chart data table
VehicleValue
BMWZ4 (G29 LCI)Facelift 2022M40i
219 hp/t
164 kW/t
4.6 kg/hp
Mercedes-BenzSL (R231)Facelift 2016SL 400 V6
221 hp/t
165 kW/t
4.5 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMWZ4 (G29 LCI)Facelift 2022M40i
598 km
371 mi
Mercedes-BenzSL (R231)Facelift 2016SL 400 V6
872 km
542 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWZ4 (G29 LCI)Facelift 2022M40i
340 hp
254 kW
4.6 s
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Mercedes-BenzSL (R231)Facelift 2016SL 400 V6
367 hp
274 kW
4.9 s
Unrestricted
270 km/h168 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 LCI)Facelift 2022M40i
Power
340 hp
254 kW
0-100 km/h4.6 s
Top speed
Unrestricted
270 km/h168 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
Mercedes-BenzSL (R231)Facelift 2016SL 400 V6
Power
367 hp
274 kW
0-100 km/h4.9 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
364 L
12.9 cu ft
Length
4,631 mm
182.3 in
Height
1,315 mm
51.8 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
BMWZ4 (G29 LCI)Facelift 2022M40i
Power
340 hp
254 kW
0-100 km/h4.6 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
Mercedes-BenzSL (R231)Facelift 2016SL 400 V6
Power
367 hp
274 kW
0-100 km/h4.9 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
8.6 L/100 km
27.4 mpg US
32.8 mpg UK

Mercedes-Benz SL (R231) Facelift 2016 SL 400 V6 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 (G29 LCI)Facelift 2022M40i
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
4.6 s
Mercedes-BenzSL (R231)Facelift 2016SL 400 V6
8.6 L/100 km
27.4 mpg US
32.8 mpg UK
4.9 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 (G29 LCI)Facelift 2022M40i
219 hp/t
164 kW/t
4.6 kg/hp
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
Mercedes-BenzSL (R231)Facelift 2016SL 400 V6
221 hp/t
165 kW/t
4.5 kg/hp
8.6 L/100 km
27.4 mpg US
32.8 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMWZ4 (G29 LCI)Facelift 2022M40iMercedes-BenzSL (R231)Facelift 2016SL 400 V6
Power
340 hp
254 kW
367 hp
274 kW
Torque
500 Nm
369 lb-ft
500 Nm
369 lb-ft
Acceleration
4.6 s
4.9 s
Top speed
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Unrestricted
270 km/h168 mph
Restricted
250 km/h155 mph
Lightness
1,550 kg
3,417 lb
1,660 kg
3,660 lb
Fuel consumption
8.7 L/100 km
27.0 mpg US
32.5 mpg UK
8.6 L/100 km
27.4 mpg US
32.8 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
364 L
12.9 cu ft
Length
4,631 mm
182.3 in
Height
1,315 mm
51.8 in
Range score
598 km
371 mi
872 km
542 mi
Trunk score
281 L
9.9 cu ft
364 L
12.9 cu ft
Power-to-weight score
219 hp/t
164 kW/t
4.6 kg/hp
221 hp/t
165 kW/t
4.5 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 LCI) Facelift 2022 M40iMercedes-Benz SL (R231) Facelift 2016 SL 400 V6
Consumption8.7 L/100 km27 mpg US32.5 mpg UK8.6 L/100 km27.4 mpg US32.8 mpg UK
Cost / 100 km15.22 LC100 km15.05 LC100 km
Cost / 100 mi24.50 LC100 mi24.22 LC100 mi
Annual fuel used1,305 L345 US gal287 UK gal1,290 L341 US gal284 UK gal
Annual fuel cost2,284 LC/year2,258 LC/year

Head-to-head comparisons

BMW Z4 (G29 LCI) Facelift 2022 M40i

  • Is 110 kg lighter
  • Is 0.3 s quicker from 0-100 km/h

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Highest torque
  • Lightest

Cons

  • Lowest power
  • Highest combined fuel consumption
  • Smallest trunk

Mercedes-Benz SL (R231) Facelift 2016 SL 400 V6

  • Has 27 hp more
  • Uses 0.1 L/100 km less fuel
  • Has 2 hp/t better power-to-weight
  • Has 274 km (170 mi) more estimated range
  • Has 83 L more trunk volume

Pros

  • Most powerful
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Heaviest

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW Z4 (G29 LCI) M40i
Mercedes-Benz SL (R231) SL 400 V6
Compare selected cars
2 vehicles selected

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