Why does the UK use mpg?

While the UK uses miles per gallon to denote fuel economy, many other countries show how efficient a car is by saying how many litres of fuel it uses after it’s been driven for 100km (roughly 62 miles). Dividing 282.5 by a car’s mpg figure will also give you its l/100km rating.

Why is British mpg different?

The first is, as you mention, the Imperial gallon. The British use a gallon that is 20 percent larger than a U.S. gallon, not 10 percent larger. So right there, you increase the mileage rating by 20 percent.

Is petrol sold in litres or gallons in UK?

While we buy petrol and diesel in the UK in litres, a metric (see: logical) unit, we measure its efficiency in miles per gallon, an imperial (see: irritatingly British) unit.

Is mileage the same as fuel economy?

Fuel economy is measured in miles per gallon (or in electric vehicles, miles per gallon gasoline equivalent (MPGe)), and refers to how far a car can go using a set amount of fuel. Since this is the inverse of fuel consumption, the larger the value, the better the rating.

Why is US and UK mpg different?

So when those figures are converted to the more familiar MPG measure–generally for a U.K. audience–they are generally given in the Imperial gallons used there. And those aren’t the same as U.S. gallons: They’re 20 percent larger, containing 5 quarts rather than the 4 quarts in a U.S. gallon.

Why is US and UK gallon different?

In the Americas, a gallon is equivalent to 128 fluid ounces or 3.785 liters (American spelling). But in the UK, it’s 160 fluid ounces or 4.546 litres (British spelling). That’s quite a difference, with the British contenders having to potentially guzzle down 20\% more milk than their American counterparts.

When did UK start selling petrol in litres?

It was certainly litres by 1990.

When did Britain change from gallons to litres?

One of the effects of this directive was that the United Kingdom amended its own legislation to replace the gallon with the litre as a primary unit of measure in trade and in the conduct of public business, effective from 30 September 1995.

What is a good mpg UK?

The generally accepted standard has risen from a consumption of around 8.1 to 7.1 litres per 100km (35-40mpg) in the past to more like 5.6 to 5.1 litres (50-55mpg). As a rule of thumb, vehicles listed at less than 6.0 litres/100km are considered to have ‘good’ MPG.

Is a UK gallon different from a US gallon?

The U.S. liquid gallon is defined as 231 cubic inches and equates to approximately 3.785 litres. One imperial gallon is equivalent to approximately 1.2 U.S. liquid gallons. The U.S. dry gallon is a measurement historically applied to a volume of grain or other dry commodities.