Gallons UK per 100 Miles (gal UK/100 mi) to Miles per Liter (mi/L)

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Gallons UK per 100 Miles (gal UK/100 mi) to Miles per Liter (mi/L) conversion table

Here are the most common conversions for Gallons UK per 100 Miles (gal UK/100 mi) to Miles per Liter (mi/L) at a glance.

Gallons UK per 100 Miles (gal UK/100 mi)	Miles per Liter (mi/L)
0.1	219.96924830
0.5	43.99384966
1	21.99692483
2	10.99846241
3	7.33230828
5	4.39938497
10	2.19969248
20	1.09984624
30	0.73323083
50	0.43993850
100	0.21996925

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Converting Gallons UK per 100 Miles (gal UK/100 mi) to Miles per Liter (mi/L)

Fuel economy is the odd one out among conversions: it is usually a rate, and converting Gallons UK per 100 Miles (gal UK/100 mi) to Miles per Liter (mi/L) means flipping between "fuel per distance" (liters per 100 km) and "distance per fuel" (miles per gallon) — which are mathematical inverses, not simple multiples. Better economy means a smaller L/100km number but a larger mpg number.

The Two MPG Problem

US gallons (3.785 L) and imperial gallons (4.546 L) differ by 20%, so "30 mpg" means two different things depending on which side of the Atlantic you are on — always check. The conversion everyone should know: 235.21 ÷ mpg (US) = L/100km, which lets you compare any car review worldwide.

Practical Tips

Comparing cars? Convert everything to L/100km — it is linear, so halving it truly halves your fuel bill, while mpg improvements have diminishing returns (going 10→20 mpg saves far more fuel than 30→40). For EVs, the emerging standard is kWh/100km or miles/kWh — same inverse logic.