Mercedes-Benz CLS C257
The Mercedes-Benz CLS C257 (2018–2024): dimensions, weights, reliability and the official figures of its 55 versions in the European Union, the United Kingdom, the United States, and Canada.
Model codes: C257
Dimensions, weights and capacity
| Specification | Europe | North America | Wikipedia |
|---|---|---|---|
| Dimensions | |||
| Length | 5,000–5,010 mm RDW | 4,940–5,000 mm TC | 4,988–5,001 mm |
| Width | 1,900 mm RDW | 1,860–1,880 mm TC | 1,890 mm |
| Height | 1,440 mm RDW | 1,420–1,450 mm TC | 1,435 mm |
| Wheelbase | 2,940 mm RDW | 2,870–2,940 mm TC | 2,938 mm |
| Front track | 1,618–1,647 mm ASTRA | 1,590–1,630 mm TC | – |
| Rear track | 1,624–1,637 mm ASTRA | 1,620–1,630 mm TC | – |
| Weights and towing | |||
| Kerb weight | 1,665–1,880 kg RDW | 1,870–2,021 kg TC | 1,735–1,980 kg |
| Mass in running order | 1,765–1,980 kg RDW | – | – |
| Gross vehicle weight | 2,410–2,560 kg RDW | – | – |
| Towing, braked trailer | 1,900 kg RDW | – | – |
| Towing, unbraked trailer | 750 kg RDW | – | – |
| Seats and space | |||
| Seats | 5 RDW | – | – |
| Doors | 4 RDW | – | – |
| Luggage space (EPA) | – | 311–340 L EPA | – |
| Passenger space (EPA) | – | 2,605–2,633 L EPA | – |
| Fuel tank | – | – | 50–66 L |
| Performance | |||
| Top speed | 250–270 km/h RDW | – | 235–270 km/h |
| Torque | 400–700 Nm ASTRA | – | – |
Tyre sizes (most common first): 255/35R19, 245/40R19, 245/45R18, 275/40R18, 285/30R19, 255/40R18, 285/35R18, 275/35R19
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, Wikipedia (en, de), ASTRA type approvals (Switzerland), US EPA fuel economy data, Traficom type approvals (Finland). Wikipedia figures are used under CC BY-SA 4.0.
Reliability and owner reports
UK MOT: first-time pass rate by age
| Age at test | Pass rate | UK average | Tests |
|---|---|---|---|
| 3 years | 85.9% (84.1–87.6) | 92.2% | 1,550 |
| 4–5 years | 86.3% (85.2–87.3) | 91.0% | 4,195 |
| 6–8 years | 85.3% (82.9–87.4) | 86.4% | 925 |
What the MOT finds
| Area | This model | UK average, same ages |
|---|---|---|
| Tyres | 24.7% | 24.0% |
| Brakes | 10.2% | 15.2% |
| Suspension | 6.3% | 5.3% |
| Wheels | 5.7% | 0.5% |
| Visibility (glass, mirrors, wipers) | 2.9% | 6.2% |
| Lights and electrics | 1.5% | 5.1% |
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)
34 complaints for model years 2019–2023. 1 crash · 2 injuries
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 55 versions of the Mercedes-Benz CLS C257
Show all 55 versions
European Union 36 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 version | Engine | Power | Fuel | Consumption (combined) | CO₂ | EU registrations |
|---|---|---|---|---|---|---|
| 2021–2024 | 2.0 L | 195 kW (265 PS) | Hybrid | 5.9–6.2 L/100 km WLTP | 162–166 g/km | 919 |
| 2021–2024 | 3.0 L | 320 kW (435 PS) | Hybrid | 9.4–9.5 L/100 km WLTP | 216 g/km | 1,150 |
| 2021–2024 | 3.0 L | 270 kW (367 PS) | Hybrid | 8.8–9.0 L/100 km WLTP | 201–204 g/km | 1,354 |
| 2021–2024 | 2.9 L | 243 kW (330 PS) | Diesel | 7.1–7.2 L/100 km WLTP | 187–189 g/km | 1,827 |
| 2021–2024 | 2.0 L | 143 kW (194 PS) | Diesel | 5.7–6.1 L/100 km WLTP | 154–158 g/km | 1,073 |
| 2021–2024 | 2.0 L | 220 kW (299 PS) | Hybrid | 7.9–8.2 L/100 km WLTP | 182–193 g/km | 206 |
| 2021–2022 | 2.0 L | 220 kW (299 PS) | Petrol | 6.9–7.7 L/100 km WLTP | 180–181 g/km | 44 |
| 2021–2022 | 2.0 L | 195 kW (265 PS) | Diesel | 5.4–5.8 L/100 km WLTP | 149–160 g/km | 153 |
| 2021 | 2.0 L | 180 kW (245 PS) | Diesel | 6.3 L/100 km WLTP | 142 g/km | 146 |
| 2021 | 2.9 L | 250 kW (340 PS) | Diesel | 6.8 L/100 km WLTP | 191 g/km | 98 |
| 2021 | 2.9 L | 210 kW (286 PS) | Diesel | 6.4 L/100 km WLTP | 190 g/km | 35 |
| 2021 | 3.0 L | 270 kW (367 PS) | Petrol | 8.6 L/100 km WLTP | 198 g/km | 28 |
| 2021 | 3.0 L | 320 kW (435 PS) | Petrol | 9.1 L/100 km WLTP | 210 g/km | 15 |
| 2020 | 3.0 L | 270 kW (367 PS) | Hybrid | – | 188 g/km | 1,306 |
| 2018–2020 | 2.9 L | 210 kW (286 PS) | Diesel | – | 153–156 g/km | 12,224 |
| 2018–2020 | 2.0 L | 180 kW (245 PS) | Diesel | – | 142 g/km | 4,191 |
| 2018–2020 | 2.9 L | 250 kW (340 PS) | Diesel | – | 158–159 g/km | 7,927 |
| 2019–2020 | 2.0 L | 143 kW (194 PS) | Diesel | – | 132–133 g/km | 918 |
| 2020 | 3.0 L | 320 kW (435 PS) | Hybrid | – | 202 g/km | 653 |
| 2020 | 2.9 L | 243 kW (330 PS) | Diesel | – | 169 g/km | 516 |
| 2019–2020 | 2.0 L | 220 kW (299 PS) | Hybrid | – | 162–164 g/km | 640 |
| 2018–2020 | 3.0 L | 270 kW (367 PS) | Petrol | – | 184–186 g/km | 6,637 |
| 2018–2020 | 2.0 L | 220 kW (299 PS) | Petrol | – | 160–162 g/km | 770 |
| 2018–2020 | 3.0 L | 320 kW (435 PS) | Petrol | – | 200–203 g/km | 693 |
| 2020 | 2.0 L | 195 kW (265 PS) | Hybrid | – | 189 g/km | 34 |
| 2019 | 3.0 L | 320 kW (435 PS) | Petrol | – | 221 g/km | 1,399 |
| 2019 | 3.0 L | 270 kW (367 PS) | Hybrid | 1.0 kWh/100 km NEDC | 184 g/km | 930 |
| 2019 | 3.0 L | 320 kW (435 PS) | Hybrid | 1.0 kWh/100 km NEDC | 203 g/km | 369 |
| 2018–2019 | 2.1 L | 120 kW (163 PS) | Diesel | – | 127 g/km | 106 |
| 2018 | 2.1 L | 150 kW (204 PS) | Diesel | – | 142 g/km | 822 |
| 2018 | 3.0 L | 190 kW (258 PS) | Diesel | – | 166 g/km | 622 |
| 2018 | 3.5 L | 245 kW (333 PS) | Petrol | – | 189 g/km | 88 |
| 2018 | 5.5 L | 430 kW (585 PS) | Petrol | – | 250 g/km | 84 |
| 2018 | 2.1 L | 125 kW (170 PS) | Diesel | – | 123 g/km | 38 |
| 2018 | 3.0 L | 270 kW (367 PS) | Other fuel | – | 184 g/km | 22 |
| 2018 | 4.7 L | 300 kW (408 PS) | Petrol | – | 218 g/km | 10 |
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 version | Engine | Power | Fuel | Gearbox | Consumption (combined) | CO₂ |
|---|---|---|---|---|---|---|
| 2021–2023CLS 400 d 4MATIC | 2.9 L | 243 kW (330 PS) | Diesel | 9-speed automatic | 6.7–7.4 L/100 km WLTP | 175–196 g/km |
| 2021–2023AMG CLS 53 4MATIC+ | 3.0 L | 320 kW (435 PS) | Hybrid | 9-speed automatic | 9.1–9.6 L/100 km WLTP | 209–219 g/km |
| 2020–2021CLS 300 d | 2.0 L | 180 kW (245 PS) | Diesel | 9-speed automatic | 6.1–7.0 L/100 km WLTP | 161–183 g/km |
| 2021CLS 300 d | 2.0 L | 180 kW (245 PS) | Hybrid | 9-speed automatic | 6.1–7.0 L/100 km WLTP | 161–183 g/km |
| 2020–2021CLS 350 | 2.0 L | 220 kW (299 PS) | Petrol | 9-speed automatic | 7.6–8.6 L/100 km WLTP | 172–195 g/km |
| 2021CLS 350 | 2.0 L | 220 kW (299 PS) | Hybrid | 9-speed automatic | 7.6–8.6 L/100 km WLTP | 172–195 g/km |
| 2021CLS 300 d 4MATIC | 2.0 L | 195 kW (265 PS) | Hybrid | 9-speed automatic | 6.4 L/100 km WLTP | 151–173 g/km |
| 2020–2021CLS 400 d 4MATIC | 2.9 L | 250 kW (340 PS) | Diesel | 9-speed automatic | 6.8–7.5 L/100 km WLTP | 178–197 g/km |
| 2020–2021CLS 450 4MATIC | 3.0 L | 270 kW (367 PS) | Petrol | 9-speed automatic | 8.0–9.1 L/100 km WLTP | 183–207 g/km |
| 2021CLS 450 4MATIC | 3.0 L | 270 kW (367 PS) | Hybrid | 9-speed automatic | 8.0–9.1 L/100 km WLTP | 183–207 g/km |
| 2018CLS 300 d 4MATIC with 19'' & 20'' rear wheels | 2.0 L | – | Diesel | 9-speed automatic | 5.4 L/100 km NEDC | 142 g/km |
| 2018CLS 350 d 4MATIC with 19'' rear wheels · CLS 350 d 4MATIC with 20'' rear wheels | 2.9 L | – | Diesel | 9-speed automatic | 5.8 L/100 km NEDC | 156 g/km |
| 2018CLS 400 d 4MATIC with 19'' rear wheels · CLS 400 d 4MATIC with 20'' rear wheels | 2.9 L | – | Diesel | 9-speed automatic | 5.9 L/100 km NEDC | 156 g/km |
| 2018CLS 450 4MATIC with 19'' rear wheels · CLS 450 4MATIC with 20'' rear wheels | 3.0 L | – | Petrol | 9-speed automatic | 7.8 L/100 km NEDC | 184 g/km |
| 2018AMG CLS 53 4MATIC with 19'' & 20'' rear wheels | 3.0 L | – | Hybrid | 9-speed automatic | 8.9 L/100 km NEDC | 203 g/km |
United States 3 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 version | Engine | Fuel | Gearbox | Drive | Consumption (combined) | CO₂ |
|---|---|---|---|---|---|---|
| 2023SIDI; Mild Hybrid | 3.0 L | Hybrid | 9-speed automatic | All-wheel drive | 25 MPG (9.4 L/100 km) EPA | 222 g/km |
| 2019–2022SIDI; Mild Hybrid | 3.0 L | Hybrid | 9-speed automatic | Four-wheel drive | 23–26 MPG (9.0–10.2 L/100 km) EPA | 213–242 g/km |
| 2019–2021SIDI; Mild Hybrid | 3.0 L | Hybrid | 9-speed automatic | Rear-wheel drive | 26 MPG (9.0 L/100 km) EPA | 208–216 g/km |
Canada 1 version
Model years sold in Canada, from Natural Resources Canada fuel consumption ratings (5-cycle test).
| Years and version | Engine | Fuel | Gearbox | Consumption (combined) | CO₂ |
|---|---|---|---|---|---|
| 2019–2023Compact | 3.0 L | Petrol | 9-speed automatic | 9.1–10.7 L/100 km 5-cycle | 213–242 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.