Mercedes-Benz SLC I

Mercedes-Benz SLC I
Photo: Charles from Port Chester, New York / Wikimedia Commons · CC BY 2.0

The Mercedes-Benz SLC I (2016–2021): dimensions, weights, reliability and the official figures of its 31 versions in the European Union, the United Kingdom, the United States, and Canada.

Model codes: R172

Dimensions, weights and capacity

SpecificationEuropeNorth America
Dimensions
Length4,150 mm RDW4,130 mm TC
Width1,820 mm RDW1,810 mm TC
Height1,310 mm RDW1,300 mm TC
Wheelbase2,430 mm RDW2,430 mm TC
Front track1,548–1,559 mm ASTRA1,560 mm TC
Rear track1,548–1,572 mm ASTRA1,570 mm TC
Weights and towing
Kerb weight1,335–1,495 kg RDW1,505–1,595 kg TC
Mass in running order1,435–1,595 kg RDW–
Gross vehicle weight1,750–1,890 kg RDW–
Seats and space
Seats2 RDW–
Doors2 RDW–
Performance
Top speed223–250 km/h RDW–
Torque300–520 Nm ASTRA–

Tyre sizes (most common first): 225/40R18, 225/45R17, 245/35R18, 245/40R17, 205/55R16, 225/50R16, 235/40R18

Ranges cover the generation’s versions and body styles; European and North American versions can differ. Sources: RDW type approvals (Netherlands), Transport Canada vehicle specifications, ASTRA type approvals (Switzerland), Traficom type approvals (Finland).

Reliability and owner reports

UK MOT: first-time pass rate by age

Age at testPass rateUK averageTests
3 years94.9% (93.7–95.8)92.2%1,704
4–5 years93.4% (92.8–93.9)91.0%8,600
6–8 years89.8% (89.3–90.3)86.4%14,394

What the MOT finds

AreaThis modelUK average, same ages
Tyres26.5%26.3%
Brakes5.5%18.4%
Suspension5.2%9.2%
Visibility (glass, mirrors, wipers)2.4%6.4%
Lights and electrics2.0%6.8%
Wheels1.9%0.5%

First MOT test of each car per year in 2022–2024, from the DVSA’s anonymised test results; only ages with at least 500 tests are shown. The figure in brackets is the 95% confidence interval; green or red means clearly above or below the UK average. The second table shows how often an item was noted (defect or advisory) in each area, against the UK average for cars of the same ages. DVSA anonymised MOT tests (Open Government Licence)

Owner complaints to NHTSA (US)

8 complaints for model years 2017–2020.

Complaints are reported by owners and not checked by NHTSA; they are not adjusted for how many cars were sold, so popular models have more. NHTSA owner complaints

All 31 versions of the Mercedes-Benz SLC I

Show all 31 versions

European Union 12 versions

New cars registered in the EU (plus Norway and Iceland), from the European Environment Agency. Figures on the NEDC procedure until 2020 and on WLTP from 2021; versions are grouped by engine and power, with their number of registrations.

Years and versionEnginePowerFuelConsumption (combined)CO₂EU registrations
20212.0 L135 kW (184 PS)Petrol6.9 L/100 km WLTP174 g/km56
20212.0 L180 kW (245 PS)Petrol7.5 L/100 km WLTP179 g/km10
2016–20202.0 L135 kW (184 PS)Petrol–139–155 g/km21,889
2018–20203.0 L287 kW (390 PS)Petrol–185–186 g/km1,045
2016–20202.0 L180 kW (245 PS)Petrol–138–161 g/km4,622
2016–20201.6 L115 kW (156 PS)Petrol–132–145 g/km10,495
2016–20193.0 L270 kW (367 PS)Petrol–178 g/km3,326
2016–20182.1 L150 kW (204 PS)Diesel–114 g/km8,456
20172.0 L135 kW (184 PS)Other fuel–141 g/km174
20172.0 L180 kW (245 PS)Other fuel–138 g/km72
20172.0 L203 kW (276 PS)Petrol–137 g/km30
20172.0 L270 kW (367 PS)Petrol–138 g/km24

United Kingdom 15 versions

New cars on sale in the UK, from the Vehicle Certification Agency. NEDC figures until 2018 and WLTP figures after; years are the editions a version appeared in.

Years and versionEnginePowerFuelGearboxConsumption (combined)CO₂
2020–2021SLC 2002.0 L135 kW (184 PS)Petrol9-speed automatic7.3–7.8 L/100 km WLTP166–178 g/km
2020–2021SLC 2002.0 L135 kW (184 PS)Petrol6-speed manual7.0–7.6 L/100 km WLTP159–171 g/km
2020–2021SLC 3002.0 L180 kW (245 PS)Petrol9-speed automatic7.6–8.0 L/100 km WLTP171–182 g/km
2020–2021AMG SLC 433.0 L287 kW (390 PS)Petrol9-speed automatic8.7–8.9 L/100 km WLTP197–201 g/km
2018SLC 180 with 17'' rear wheels · SLC 180 with 18'' rear wheels1.6 L–Petrol6-speed manual5.8 L/100 km NEDC132 g/km
2018SLC 180 with 17'' rear wheels · SLC 180 with 18'' rear wheels1.6 L–Petrol9-speed automatic5.8 L/100 km NEDC133 g/km
2017–2018SLC 180 with 18'' rear wheels1.6 L–Petrol9-speed automatic6.1–6.3 L/100 km NEDC139–144 g/km
2016–2018SLC 200 with 17'' rear wheels · SLC 200 with 18'' rear wheels2.0 L–Petrol9-speed automatic5.9 L/100 km NEDC137 g/km
2016–2018SLC 200 with 17'' rear wheels · SLC 200 with 18'' rear wheels2.0 L–Petrol6-speed manual6.5 L/100 km NEDC150 g/km
2016–2018SLC 300 with 18'' rear wheels · SLC 300 with 17'' rear wheels2.0 L–Petrol9-speed automatic6.0 L/100 km NEDC138 g/km
2018SLC 200 with 18'' rear wheels2.0 L–Petrol8-speed automatic7.0 L/100 km NEDC160 g/km
2018SLC 300 with 18'' rear wheels2.0 L–Petrol9-speed automatic7.0 L/100 km NEDC161 g/km
2016–2018SLC 250 d with 17'' rear wheels · SLC 250 d with 18'' rear wheels2.1 L–Diesel9-speed automatic4.4 L/100 km NEDC114 g/km
2016–2018AMG SLC 43 with 18'' rear wheels3.0 L–Petrol9-speed automatic7.8–8.2 L/100 km NEDC178–186 g/km
2016–2017SLC 180 with 18'' rear wheels1.6 L–Petrol6-speed manual5.8 L/100 km NEDC134 g/km

United States 2 versions

Model years sold in the USA, from the EPA and the Department of Energy (fueleconomy.gov). MPG on the EPA test; litres per 100 km = 235.215 ÷ MPG.

Years and versionEngineFuelGearboxDriveConsumption (combined)CO₂
2017–2020SIDI2.0 LPetrol9-speed automaticRear-wheel drive27 MPG (8.7 L/100 km) EPA201–206 g/km
2017–2020SIDI3.0 LPetrol9-speed automaticRear-wheel drive23 MPG (10.2 L/100 km) EPA235–238 g/km

Canada 2 versions

Model years sold in Canada, from Natural Resources Canada fuel consumption ratings (5-cycle test).

Years and versionEngineFuelGearboxConsumption (combined)CO₂
2017–2020Two-seater2.0 LPetrol9-speed automatic8.5–8.8 L/100 km 5-cycle200–206 g/km
2017–2020Two-seater3.0 LPetrol9-speed automatic10.1–10.2 L/100 km 5-cycle234–238 g/km

Similar models from other brands

Official figures are measured on standard test procedures and differ between markets. Your consumption depends on how, where and in what conditions you drive.