3 mpg (UK) to mpg (US) — 3 Imperial miles per gallon in US miles per gallon

3mpg (UK)2.498023mpg (US)

3 mpg (UK) → 2.498023 mpg (US)

Amount

From

3 Imperial miles per gallon in other units

Litres per 100 km	94.160312	L/100 km
US miles per gallon	2.498023	mpg (US)
Kilometres per litre	1.062019	km/L
Miles per litre	0.65990774	mi/L

mpg (UK) to mpg (US) at a glance

Imperial miles per gallon	US miles per gallon
1 mpg (UK)	0.83267418 mpg (US)
2 mpg (UK)	1.665348 mpg (US)
3 mpg (UK)	2.498023 mpg (US)
5 mpg (UK)	4.163371 mpg (US)
10 mpg (UK)	8.326742 mpg (US)
20 mpg (UK)	16.653484 mpg (US)
25 mpg (UK)	20.816855 mpg (US)
50 mpg (UK)	41.633709 mpg (US)
100 mpg (UK)	83.267418 mpg (US)
250 mpg (UK)	208.168546 mpg (US)
500 mpg (UK)	416.337092 mpg (US)
1,000 mpg (UK)	832.674185 mpg (US)

How to convert Imperial miles per gallon to US miles per gallon

Multiply by 0.83267418 — one Imperial mile per gallon is 0.83267418 US miles per gallon.

Working 3 mpg (UK) → 2.498023 mpg (US)

In words: about two US miles per gallon.

Questions

How many US miles per gallon are in a Imperial mile per gallon?

One Imperial mile per gallon is 0.83267418 US miles per gallon.

What is 3 Imperial miles per gallon in US miles per gallon?

3 Imperial miles per gallon is 2.498023 US miles per gallon. The working is 3 mpg (UK) → 2.498023 mpg (US).

Why can't I convert mpg with a simple multiplier?

Because the two measures run in opposite directions. Miles per gallon counts distance per unit of fuel; litres per 100 km counts fuel per unit of distance. One is the reciprocal of the other, so you divide rather than multiply.

Why is UK mpg always a bigger number than US mpg?

The Imperial gallon is about 20% larger, so the same car travels further on one of them. A car rated 30 mpg in the US is around 36 mpg in the UK, with nothing about the car having changed.

Going from 15 to 20 mpg, or 30 to 40 mpg — which saves more fuel?

The first, by a wide margin. Over 10,000 miles the 15-to-20 change saves about 167 gallons; the 30-to-40 change saves about 83. This is exactly the trap the inverse relationship sets, and why litres per 100 km is the easier measure to reason with.

Other fuel economy conversions

mpg (US) to L/100 km L/100 km to mpg (US)mpg (UK) to L/100 km mpg (US) to mpg (UK)mpg (US) to mpg (UK)