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Mercedes SLC fuel consumption

Of all Mercedes SLC modifications produced from 2016 to 2020 real fuel consumption according to user ratings is approximately 32% higher compared to advertised consumption. Starting from 2016 Mercedes SLC average difference between actual owner-reported fuel consumption and stated consumption was slightly above industry average, at 2019 difference between owner-reported and advertised fuel economy became significantly higher than average. For more details, see the table below.

Year-to-year deviations of actual owner-reported average fuel consumption from advertised values

YearGasoline cars
All carmakersMercedes SLC
2016+28%+32%
Show all years
2017+28%+32%
2018+28%+32%
2019+27%+35%
2020+27%+36%
2016 - 2020

Mercedes SLC 2016 fuel economy

Average advertised fuel consumption for petrol engines37.2 MPG
6.3 l/100km
Average real-world fuel consumption for petrol engines28.4 MPG
8.3 l/100km
Average real gasoline consumption difference *+32%

According to advertised fuel consumption, a Mercedes SLC 2016 with automatic transmission consumes on average 0.2 liters per 100 km or 3% less fuel than similar versions with manual gearbox. Based on user-reported real-world fuel consumption, this generation Mercedes SLC with automatic transmission consumes around 0.6 litres per 100 km or 8% more fuel than a version with the same engine but a manual gearbox.

Compared to similar cars of other manufacturers, the Mercedes SLC advertised fuel economy is slightly better than average, but according to available user reports on actual consumption, real fuel economy is average.
The best real fuel economy in its class according to user reviews of all the modifications has modification with 3.0 petrol engine and automatic transmission (Mercedes SLC 3.0 43 2016 AMG 367 HP). However, of all modifications the best advertised fuel economy in its class has Mercedes SLC with 2.0 petrol engine and automatic transmission (Mercedes SLC 2.0 300 2016 245 HP).

ModificationClaimed consumptionReal consumption
1.6 liter petrol engine
Mercedes SLC 1.6 180 2016 156 HP manual 40.6 MPG
5.8 l/100km
32.2 MPG
7.3 l/100km+26%
Mercedes SLC 1.6 180 2016 Automatic 156 HP automatic 42.0 MPG
5.6 l/100km
29.8 MPG
7.9 l/100km+41%
2.0 liter petrol engine
Mercedes SLC 2.0 200 2016 184 HP automatic 37.9 MPG
6.2 l/100km
28.7 MPG
8.2 l/100km+32%
Mercedes SLC 2.0 300 2016 245 HP automatic 37.9 MPG
6.2 l/100km
27.0 MPG
8.7 l/100km+40%
3.0 liter petrol engine
Mercedes SLC 3.0 43 2016 AMG 367 HP automatic 30.2 MPG
7.8 l/100km
25.3 MPG
9.3 l/100km+19%

* - Difference between advertised and user reported fuel economy has been calculated taking into account only those car versions for which information is available both on the fuel consumption specified by the manufacturer and reported by users.

User-reported fuel consumption may not accurately represent all users' experiences due to variables such as driving conditions, driving style, technical condition of the vehicle, and other circumstances. Thus, it should not be relied upon as a representative indicator.