Car comparison

BMW Z4 (G29 LCI) · Facelift 2022 20ivsMercedes-Benz SLK (R170) SLK 230 Kompressor

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

New comparison

BMW Z4 (G29 LCI) · Facelift 2022

20i

197 hp1998 ccGasolineRWDAutomaticTurbochargedRoadster2022-2026
VS

Mercedes-Benz SLK (R170)

SLK 230 Kompressor

193 hp2295 ccGasolineRWDManualSuperchargedRoadster1996-2000

Comparison overview

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

Best choices

BMW Z4 (G29 LCI) Facelift 2022 20i

  • Quickest 0-100 km/h
    6.6 s
  • Fastest top speed
    240 km/h
    149 mph
  • Most powerful
    197 hp
    147 kW
  • Highest torque
    320 Nm
    236 lb-ft
  • Lowest combined fuel consumption
    7.3 L/100 km
    32.2 mpg US
    38.7 mpg UK
  • Best estimated range
    712 km
    443 mi
  • Largest trunk
    281 L
  • Best overall score
    48/100
  • Best performance score
    55/100
  • Best economy score
    87/100
  • Best practicality score
    32/100

Specification comparison

Specification comparison
ModelBMWZ4 (G29 LCI)Facelift 202220iMercedes-BenzSLK (R170)SLK 230 Kompressor
Power
197hp147kW
193hp144kW
Torque
320Nm236lb-ft
280Nm207lb-ft
Curb weight
1,450kg3,197lb
1,250kg2,756lb
Gross weight
1,740kg3,836lb
1,585kg3,494lb
Top speed
240 km/h
149 mph
231 km/h
144 mph
To 99% top speed
80.2s99% target: 238 km/h / 148 mph
Calculated
80.3s99% target: 229 km/h / 142 mph
Calculated
0-100 km/h
6.6s
7.4s
0-200 km/h
26.7s
Calculated
31.2s
Calculated
0-60 mph
6.3s
Calculated
7.0s
Calculated
Fuel consumption
7.3L/100 km32.2mpg US38.7mpg UK
9.3L/100 km25.3mpg US30.4mpg UK
Fuel consumption city-
13.3L/100 km17.7mpg US21.2mpg UK
Fuel consumption highway-
7L/100 km33.6mpg US40.4mpg UK
Quarter mile
14.7s
Calculated
15.3s
Calculated
Power-to-weight
136hp/t101kW/t62hp/1000 lb
Calculated
154hp/t115kW/t70hp/1000 lb
Calculated
Torque-to-weight
221Nm/t148lb-ft/ton
Calculated
224Nm/t150lb-ft/ton
Calculated
Estimated range
712km443mi
Calculated
570km354mi
Calculated
Displacement
1,998cc122cu in
2,295cc140cu in
Length
4,324mm170in
3,995mm157in
Width
1,864mm73in
1,715mm68in
Height
1,304mm51in
1,284mm51in
Wheelbase
2,470mm97in
2,400mm94in
Front track
1,618mm64in
1,488mm59in
Rear track
1,613mm64in
1,485mm58in
Ground clearance
117mm5in
-
Trunk volume
281L
145L
Max trunk volume-
348L
Doors
2
2
Seats
2
2
Fuel tank
52L
53L

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 20iMercedes-Benz SLK (R170) SLK 230 KompressorPowerTorque
  • BMW Z4 (G29 LCI) Facelift 2022 20i: Power / Torque
  • Mercedes-Benz SLK (R170) SLK 230 Kompressor: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWZ4 (G29 LCI)Facelift 202220i4,500-6,500 rpm1,450-4,200 rpm6,750 rpm
Mercedes-BenzSLK (R170)SLK 230 Kompressor5,300 rpm2,500-4,800 rpm5,550 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMWZ4 (G29 LCI)Facelift 202220iMercedes-BenzSLK (R170)SLK 230 Kompressor
Acceleration checkpoints
0-60 mph
0-97 km/h
6.3 s
7.0 s
0-100 km/h
0-62 mph
6.6 s
7.4 s
0-200 km/h
0-124 mph
26.7 s
31.2 s
Top speed
240 km/h
149 mph
231 km/h
144 mph
Drag race simulation
60 ft
18 m
2.4 s
2.6 s
330 ft
101 m
6.4 s
6.7 s
1/8 mile
201 m
9.6 s
10.1 s
1000 ft
305 m
12.3 s
12.9 s
1/4 mile
402 m
14.7 s
15.3 s
Trap speed
1/4 mile
402 m
158 km/h
98 mph
152 km/h
95 mph

Power comparison

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

Chart data table
VehicleValue
BMWZ4 (G29 LCI)Facelift 202220i
197 hp
147 kW
Mercedes-BenzSLK (R170)SLK 230 Kompressor
193 hp
144 kW

BMW Z4 (G29 LCI) Facelift 2022 20i has 4 hp more than Mercedes-Benz SLK (R170) SLK 230 Kompressor.

The biggest power difference is between Mercedes-Benz SLK (R170) SLK 230 Kompressor and BMW Z4 (G29 LCI) Facelift 2022 20i: 4 hp (3 kW).

Torque comparison

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

Chart data table
VehicleValue
BMWZ4 (G29 LCI)Facelift 202220i
320 Nm
236 lb-ft
Mercedes-BenzSLK (R170)SLK 230 Kompressor
280 Nm
207 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMWZ4 (G29 LCI)Facelift 202220i
1,450 kg
3,197 lb
Mercedes-BenzSLK (R170)SLK 230 Kompressor
1,250 kg
2,756 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 202220i
240 km/h
149 mph
Mercedes-BenzSLK (R170)SLK 230 Kompressor
231 km/h
144 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 202220i6.6 s
Mercedes-BenzSLK (R170)SLK 230 Kompressor7.4 s

The biggest 0-100 km/h difference is between BMW Z4 (G29 LCI) Facelift 2022 20i and Mercedes-Benz SLK (R170) SLK 230 Kompressor: 0.8 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 202220i
7.3 L/100 km
32.2 mpg US
38.7 mpg UK
Mercedes-BenzSLK (R170)SLK 230 Kompressor
9.3 L/100 km
25.3 mpg US
30.4 mpg UK

The biggest fuel consumption difference is between BMW Z4 (G29 LCI) Facelift 2022 20i and Mercedes-Benz SLK (R170) SLK 230 Kompressor: 2.0 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
BMWZ4 (G29 LCI)Facelift 202220i
136 hp/t
101 kW/t
7.4 kg/hp
Mercedes-BenzSLK (R170)SLK 230 Kompressor
154 hp/t
115 kW/t
6.5 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMWZ4 (G29 LCI)Facelift 202220i
712 km
443 mi
Mercedes-BenzSLK (R170)SLK 230 Kompressor
570 km
354 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWZ4 (G29 LCI)Facelift 202220i
197 hp
147 kW
6.6 s
240 km/h
149 mph
Mercedes-BenzSLK (R170)SLK 230 Kompressor
193 hp
144 kW
7.4 s
231 km/h
144 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 202220i
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
Mercedes-BenzSLK (R170)SLK 230 Kompressor
Power
193 hp
144 kW
0-100 km/h7.4 s
Top speed
231 km/h
144 mph
Doors/seats
2 doors
2 seats
Trunk
145 L
5.1 cu ft
Length
3,995 mm
157.3 in
Height
1,284 mm
50.6 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 202220i
Power
197 hp
147 kW
0-100 km/h6.6 s
Top speed
240 km/h
149 mph
7.3 L/100 km
32.2 mpg US
38.7 mpg UK
Mercedes-BenzSLK (R170)SLK 230 Kompressor
Power
193 hp
144 kW
0-100 km/h7.4 s
Top speed
231 km/h
144 mph
9.3 L/100 km
25.3 mpg US
30.4 mpg UK

BMW Z4 (G29 LCI) Facelift 2022 20i 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 202220i
7.3 L/100 km
32.2 mpg US
38.7 mpg UK
6.6 s
Mercedes-BenzSLK (R170)SLK 230 Kompressor
9.3 L/100 km
25.3 mpg US
30.4 mpg UK
7.4 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
BMWZ4 (G29 LCI)Facelift 202220i
136 hp/t
101 kW/t
7.4 kg/hp
7.3 L/100 km
32.2 mpg US
38.7 mpg UK
Mercedes-BenzSLK (R170)SLK 230 Kompressor
154 hp/t
115 kW/t
6.5 kg/hp
9.3 L/100 km
25.3 mpg US
30.4 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMWZ4 (G29 LCI)Facelift 202220iMercedes-BenzSLK (R170)SLK 230 Kompressor
Power
197 hp
147 kW
193 hp
144 kW
Torque
320 Nm
236 lb-ft
280 Nm
207 lb-ft
Acceleration
6.6 s
7.4 s
Top speed
240 km/h
149 mph
231 km/h
144 mph
Lightness
1,450 kg
3,197 lb
1,250 kg
2,756 lb
Fuel consumption
7.3 L/100 km
32.2 mpg US
38.7 mpg UK
9.3 L/100 km
25.3 mpg US
30.4 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
145 L
5.1 cu ft
Length
3,995 mm
157.3 in
Height
1,284 mm
50.6 in
Range score
712 km
443 mi
570 km
354 mi
Trunk score
281 L
9.9 cu ft
145 L
5.1 cu ft
Power-to-weight score
136 hp/t
101 kW/t
7.4 kg/hp
154 hp/t
115 kW/t
6.5 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 20iMercedes-Benz SLK (R170) SLK 230 Kompressor
Consumption7.3 L/100 km32.2 mpg US38.7 mpg UK9.3 L/100 km25.3 mpg US30.4 mpg UK
Cost / 100 km12.78 LC100 km16.28 LC100 km
Cost / 100 mi20.56 LC100 mi26.19 LC100 mi
Annual fuel used1,095 L289 US gal241 UK gal1,395 L369 US gal307 UK gal
Annual fuel cost1,916 LC/year2,441 LC/year

Head-to-head comparisons

BMW Z4 (G29 LCI) Facelift 2022 20i

  • Has 4 hp more
  • Has 40 Nm more
  • Is 0.8 s quicker from 0-100 km/h
  • Has 9 km/h (6 mph) higher top speed
  • Uses 2.0 L/100 km less fuel
  • Has 142 km (89 mi) more estimated range
  • Has 136 L more trunk volume

Pros

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

Cons

  • Heaviest

Mercedes-Benz SLK (R170) SLK 230 Kompressor

  • Is 200 kg lighter
  • Has 19 hp/t better power-to-weight

Pros

  • Lightest
  • Best power-to-weight ratio

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW Z4 (G29 LCI) 20i
Mercedes-Benz SLK (R170) SLK 230 Kompressor
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