BMW Z4 2018 fuel consumption

BMW Z4 from 2018 to 2021 real fuel consumption according to user reports is approximately 15% higher compared to advertised fuel consumption. Starting from 2018 BMW Z4 average difference between actual owner-reported fuel consumption and stated consumption was slightly above industry average, at 2020 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

Year	Gasoline cars
Year	All carmakers	BMW Z4
2018	+28%	+33%
Show all years
2019	+28%	+33%
2020	+27%	+33%
2021	+26%	+33%

See below for the actual consumption of generations and versions of BMW Z4.

2018

BMW Z4 2018 G29 cabrio fuel economy

Average advertised fuel consumption for petrol engines	36.0 MPG 6.5 l/100km
Average real-world fuel consumption for petrol engines	27.8 MPG 8.5 l/100km
Average real gasoline consumption difference *	+33%

BMW Z4 2018 specs

Based on user-reported real-world fuel consumption, this generation BMW Z4 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 from other manufacturers, the BMW Z4 fuel economy is significantly above 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 (BMW Z4 2018 3.0 M40i 340 HP 4x4). However, of all modifications the best advertised fuel economy in its class has BMW Z4 with 2.0 petrol engine and automatic transmission (BMW Z4 2018 2.0 30i 258 HP).

The table below shows the real and claimed fuel consumption and the differences for specific versions.

Modification	Claimed consumption	Real consumption
2.0 liter petrol engine
BMW Z4 2018 2.0 20i 197 HP automatic	38.6 MPG 6.1 l/100km	29.0 MPG 8.1 l/100km+33%
BMW Z4 2018 2.0 20i 197 HP manual		31.4 MPG 7.5 l/100km
BMW Z4 2018 2.0 30i 258 HP automatic	38.6 MPG 6.1 l/100km	26.7 MPG 8.8 l/100km+44%
3.0 liter petrol engine
BMW Z4 2018 3.0 M40i 340 HP automatic	31.8 MPG 7.4 l/100km	26.1 MPG 9.0 l/100km+22%
BMW Z4 2018 3.0 M40i 340 HP 4x4 automatic		26.4 MPG 8.9 l/100km

Do you own a BMW Z4? Please share your fuel economy!

* - 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.