Best MPG Cars 2026: 7 of the Most Fuel-Efficient Used Cars
With fuel prices climbing again, choosing a car that makes every gallon go further matters more than ever. Here are seven economical used cars to consider in 2026.
Michael Golson
Published on 23 September 2026 | 7 mins read
Best MPG cars 2026: 7 fuel efficient used cars
With diesel hovering just below £2 a litre and petrol above £1.70, fuel economy has become a very serious consideration for UK drivers. At the time of writing, UK averages are around 197p for diesel and 173p for petrol, while global diesel prices have hit record highs amid continued supply disruption.
If you’re looking for your next used car, choosing something that squeezes a few extra miles out of every gallon could make a noticeable difference.
Here are seven of the most fuel-efficient cars worth considering in 2026.
Toyota Yaris Hybrid
Official fuel economy: up to 76.3mpg
The Toyota Yaris Hybrid is one of the strongest choices if low fuel bills are the priority. Its petrol-electric system is particularly efficient around town, where it can frequently switch the engine off and use electric power for short periods.
There’s also a huge choice of used Yaris Hybrids, making it one of the easiest economical cars to find at different price points.
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Renault Clio E-Tech Hybrid
Official fuel economy: up to 65.7mpg
The Clio E-Tech combines a petrol engine with electric motors to deliver strong fuel economy without needing to be plugged in.
It’s a good all-rounder too, offering impressive efficiency in town while still feeling comfortable and capable on longer journeys.
Search used Renault Clio E-Tech Hybrids
MG3 Hybrid+
Official fuel economy: up to 64.2mpg
The MG3 Hybrid+ is another that combines strong fuel economy with a bit more punchier performance than you might expect from an economical small car.
Its full-hybrid system returns up to 64.2mpg officially, while a 0-62mph time of 8.0 seconds makes it one of the livelier choices here.
Suzuki Swift Hybrid
Official fuel economy: up to 64.2mpg
The Suzuki Swift takes a simple approach to efficiency, using mild-hybrid technology and low weight to keep fuel consumption down.
It’s a good option if you want something small, affordable and economical without moving to a more complicated full-hybrid setup.
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Toyota Corolla Hybrid
Official fuel economy: up to 64.2mpg
The Corolla offers much of the Yaris Hybrid’s efficiency in a larger, more family-friendly package.
Some 1.8-litre hybrid versions can return up to 64.2mpg, making it an especially useful choice if you need more space - but still want strong fuel economy.
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Honda Jazz e:HEV
Official fuel economy: up to 62.8mpg
The Honda Jazz combines excellent fuel economy with one of the most practical interiors in its class.
Its full-hybrid system needs no plugging in, while its clever packaging makes it much more versatile than its compact dimensions suggest.
Kia Niro Hybrid
Official fuel economy: up to 61.4mpg
Much like the Jazz, the Kia Niro Hybrid is a good option if you want strong fuel economy but need more space than a typical small hatchback can offer.
Its crossover body gives you a roomy cabin and useful boot, while some versions can return more than 60mpg combined.
What about plug-in hybrids?
Plug-in hybrids can produce eye-catching official MPG figures, sometimes well into three figures, but those numbers aren’t directly comparable with the cars above.
The official test assumes the battery is regularly charged and some of the journey is completed on electric power. If you can charge frequently, a PHEV can be extremely economical. If you rarely plug it in, the real-world result can be very different.
Two seriously fuel-efficient motorbikes
Honda CB125F
Official fuel consumption: 1.4 litres per 100km
Honda quotes fuel consumption of just 1.4 litres per 100km for the CB125F, equivalent to roughly 200mpg. It also claims a potential range of up to 800km between fill-ups.
For solo commuting, that makes it vastly more fuel-efficient than even the cars above.
Honda Super Cub C125
Official fuel consumption: 1.5 litres per 100km
The Super Cub C125 is nearly as frugal, using an official 1.5 litres of fuel per 100km, equivalent to roughly 188mpg.
It obviously won’t replace a car for everyone, but for short solo journeys it shows just how little fuel a small-capacity bike can use.
Search used Honda Super Cub C125s
Which fuel-efficient car should you choose?
The car with the biggest MPG figure isn’t automatically the best choice for you.
A hybrid such as the Yaris, Clio or Jazz is likely to make more sense if most of your journeys are short and urban, while a diesel Golf or Octavia comes into its own if you regularly cover longer motorway distances - although diesel is especially pricey right now.
The most economical option is ultimately the one that suits how you actually drive.
How can I improve my car’s fuel economy?
Smooth acceleration, anticipating traffic and avoiding unnecessary heavy braking can all help you use less fuel.
Keeping your tyres correctly inflated, removing unnecessary weight and staying on top of servicing can also help your car perform as efficiently as possible.
Looking for an economical used car? Browse used cars on Cazoo and compare models, prices and specifications to find the right one for you.