AutoTools

29 mpg to L/100 km

29 mpg is 8.11 L/100 km when the figure is measured in US gallons, or 9.74 L/100 km in imperial gallons. Which one applies depends entirely on where the number came from — a US window sticker and a UK brochure use the same two letters for different volumes.

L/100 km (US)
8.11
from 29 mpg US
L/100 km (imperial)
9.74
from 29 mpg imp
km/L
12.33
US basis
mpg imperial
34.8
same car as 29 mpg US

The working

US:        235.21 ÷ 29 = 8.11 L/100 km
imperial:  282.48 ÷ 29 = 9.74 L/100 km

where 235.21 = 100 × 3.785411784 ÷ 1.609344
      282.48 = 100 × 4.54609    ÷ 1.609344

Nearby figures

Questions

What is 29 mpg in L/100 km?

29 mpg is 8.11 L/100 km if the figure is US, or 9.74 L/100 km if it is imperial. Divide 235.21 by the mpg for US gallons, or 282.48 for imperial.

Is 29 mpg good?

It is thirsty by current standards. 8.1 L/100 km is typical of larger SUVs, pickups and older or performance cars.

What is 29 US mpg in UK mpg?

About 34.8 mpg imperial. The imperial gallon is 20% larger, so the same car always scores higher on the UK scale — which is why the two are not interchangeable.

Want the running cost rather than the conversion? Open the fuel cost calculator.