The 2018 BMW M4 Convertible gets a 3-liter I6 under the hood that makes 425 hp @ 5500 rpm horsepower and 406 lb.-ft. @ 1850 rpm of torque. This engine is quite fuel-efficient and helps the car deliver a mileage of 17 mpg in the city and 25 mpg on the highway. The combined efficiency of the engine comes out to be 20 mpg as rated by the EPA.

2018 BMW M4 Convertible MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2dr Convertible (3.0L 6cyl Turbo 6M)17 mpg25 mpg20 mpg15.9 gal.515.2/672.0 mi.
When it comes to fuel economy, the 2018 BMW M4 Convertible is the least efficient of the lot. The car offers 17 mpg in the city, 25 mpg on the highway and combined efficiency of 20 mpg. All other rivals offer almost similar mpg figures but the 2018 BMW M4 Convertible still goes down with its poorest mileage.

Its low MPG figures also hinder the overall travel range on a full tank which comes out to be 515.2/672.0 miles. The most efficient car amongst the competition is the 2018 Mercedes-Benz C-Class Convertible with a mileage of 22 mpg in the city and 29 mpg on the highway. It has a total travel range of 382.80 / 504.60 miles on a full tank.

2018 BMW M4 Convertible vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2018 BMW M4 Convertible17 mpg25 mpg20 mpg15.9 gal.515.2/672.0 mi.
2018 Ford Mustang Convertible20 mpg27 - 28 mpg23 mpg15.5 gal.310.0/434.0 - 442.0/650.0 mi.
2018 Mercedes-Benz C-Class Convertible22 mpg29 mpg25 mpg17.4 gal.382.80 / 504.60 mi.
2018 Porsche 718 Boxster20 - 21 mpg26 - 28 mpg22 - 24 mpg14.3 - 16.9 gal.300.30 / 400.40 - 338.00 / 439.40 mi.

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2017 BMW M4 Convertible MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2dr Convertible (3.0L 6cyl Turbo 6M)17 mpg24 mpg19 mpg15.8 gal.270.30 / 413.40 mi.

2017 BMW M4 Convertible vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2017 BMW M4 Convertible17 mpg24 mpg19 mpg15.8 gal.270.30 / 413.40 mi.
2017 Mercedes-Benz C-Class Convertible22 - 23 mpg29 - 31 mpg25 - 26 mpg17.4 gal.382.80 / 504.60 - 400.20 / 539.40 mi.
2017 Mercedes-Benz AMG C 63 Convertible17 mpg22 mpg19 mpg17.4 gal.295.80 / 382.80 mi.
2017 BMW M6 Convertible14 mpg20 mpg16 mpg21.1 gal.295.40 / 422.00 mi.

2016 BMW M4 Convertible MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2dr Convertible (3.0L 6cyl Turbo 6M)17 mpg26 mpg20 mpg15.8 gal.270.30 / 413.40 mi.

2016 BMW M4 Convertible vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2016 Porsche 911 Carrera Convertible16 - 19 mpg26 - 27 mpg21 - 22 mpg16.9 - 18 gal.321.10 / 456.30 - 342.00 / 468.00 mi.
2016 Chevrolet Corvette Stingray Convertible17 mpg29 mpg21 mpg18.5 gal.314.50 / 536.50 mi.
2016 BMW M4 Convertible17 mpg26 mpg20 mpg15.8 gal.270.30 / 413.40 mi.
2016 Jaguar F-TYPE Convertible15 - 19 mpg23 - 28 mpg18 - 22 mpg15.8 - 18.5 gal.277.50 / 444.00 - 351.50 / 518.00 mi.
2016 Mercedes-Benz SL-Class16 - 20 mpg24 - 27 mpg20 - 23 mpg19.8 gal.316.80 / 475.20 - 396.00 / 534.60 mi.
2016 Mercedes-Benz AMG SLK 5519 mpg28 mpg22 mpg18.5 gal.-

2015 BMW M4 Convertible MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2dr Convertible (3.0L 6cyl Turbo 6M)17 mpg26 mpg21 mpg15.9 gal.336.60 / 475.20 - 396.00 / 534.60 mi.

2015 BMW M4 Convertible vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2015 Mercedes-Benz AMG SLK 5519 mpg28 mpg23 mpg18.5 gal.351.50 / 518.00 mi.
2015 Porsche 911 Carrera Convertible19 mpg26 - 27 mpg22 - 23 mpg16.9 - 18 gal.-
2015 Chevrolet Corvette Stingray Convertible17 mpg29 mpg21 - 22 mpg18.5 gal.314.50 / 536.50 mi.
2015 BMW M4 Convertible17 mpg26 mpg21 mpg15.9 gal.270.30 / 413.40 mi.
2015 Jaguar F-TYPE Convertible16 - 20 mpg23 - 28 mpg19 - 24 mpg18.5 gal.351.50 / 499.50 mi.
2015 Mercedes-Benz SL-Class17 - 20 mpg24 - 27 mpg20 - 23 mpg19.8 gal.336.60 / 475.20 - 396.00 / 534.60 mi.

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