🛢️UK vs US Gallon: Whats the Difference

Whether you're importing a car, reading reviews, or comparing international fuel prices — gallon conversions can be confusing. UK vs US gallons aren't the same, and if you're using the wrong numbers, your fuel maths can go way off.

Here’s what you need to know — and how Resolvo’s Gallon Converter Tool can make it effortless.

🇬🇧 UK vs 🇺🇸 US Gallons: What's the Difference?

That means a UK gallon is about 20% bigger than a US gallon. If you're comparing MPG figures or trying to understand tank sizes — that 20% makes a big difference.

🚘 Why It Matters

• Fuel Efficiency: A car rated at 30 MPG in the US only gets about 25 UK MPG.

• Tank Size Comparisons: A "10 gallon" tank in the US holds far less than a UK one.

• Fuel Costs: Prices per gallon may seem cheaper in the US — but that's partly because the gallon is smaller.

Whether you're planning a trip abroad, importing a vehicle, or trying to calculate fuel costs, getting the units right is essential.

🔄 Use Resolvo’s Free Gallon Converter

Just enter your number of litres, UK gallons, or US gallons — and our tool does the rest instantly. It works both ways and shows clear results for:

• Litres ↔ UK Gallons

• Litres ↔ US Gallons

• UK ↔ US Gallons

Check the Gallon Converter here

🔍 Typical Examples

🙋 FAQs

Q: How do I know if a car’s MPG is UK or US?

UK sites use UK gallons. US reviews use US gallons. Always convert before comparing.

Q: Is one gallon more accurate than the other?

They're just different systems. Use the one for your country, and convert when needed.

Q: Why does the US show better MPG?

Smaller gallons = bigger numbers. The car isn’t more efficient — it’s just a different unit.

Q: Do I need this if I don’t travel?

If you're comparing car specs, tank sizes or watching YouTube car reviews — yep, it's helpful.

Q: What else does Resolvo help with?

Parking fines, MOT checks, fuel calculators — we help UK drivers save time and money.

🚗 Final Word

Understanding fuel units shouldn’t be this hard — but it is. Our converter keeps it simple. Bookmark it, use it, and save yourself a maths headache.

And if you're ever hit with an unfair parking fine, or need to check your MOT status, we’ve got tools for that too — always free, always fast.

Other tools from Resolvo

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• ULEZ Checker - check if your car is ULEZ compliant

• Journey Cost Calculator — Calculate trip fuel costs

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• PCP Calculator - Calculate your car finance monthly payments

• HP Calculator - calculate your hire purchase finance monthly payment