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Looking to save some pennies? These are the most economical cars on sale today - tested in the real world

Finding a car that sips fuel rather than guzzles it has long been a top priority for many drivers, but it seems it’s more important than ever to make your money - and fuel - stretch as far as possible. 

With fluctuating fuel prices and increasing environmental awareness, the appeal of a highly economical car is at an all-time high - but with so many models on the market, how do you pinpoint the ones that truly excel in fuel efficiency?

It’s one thing to read the official miles-per-gallon (MPG) figures published by manufacturers, but these numbers are often achieved in ideal conditions and not easily replicated in the real world. 

To help you make a more informed decision, we’ve compiled a list of all the most economical cars on sale today. To see if they’re up to snuff, we’ve also included our own economy results for each model – with some surprising results. 

This list includes petrol, diesel, mild-hybrid and full-hybrid models. We’ve excluded plug-in hybrid cars here, because their officially advertised economy figures are often highly unrealistic and rely on large, charged-up batteries. 

We’ve also excluded fully-electric models here, but you can see our list of the longest-range electric cars, plus our compilation of the most efficient electric cars and their real-world results. The top pick based on official figures is the frugal Mazda 2, but you’ll have to read on to see what it actually scored in the real world. 

So whether you're a daily commuter, a budget-conscious buyer or simply looking to reduce your carbon footprint, these vehicles represent some of the best choices available for maximising your miles per gallon.

 

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Claimed economy: 74.3mpg

Our economy: 60.3mpg

It’s likeable, efficient and honest, with enough of a dash of dynamic fun that it can hold its head up in the shrinking but still competitive supermini ranks

The Mazda 2 is sold as one of the most economical cars on sale today, with a remarkable advertised economy figure of 74.3mpg.

You might be thinking that this small Japanese hatchback looks familiar, and you'd be correct. The Mazda 2 is in effect a rebadged Toyota Yaris, sharing most of its underpinnings and, crucially, its hybrid technology.

It isn't a straight copy and paste, though. While the Yaris offers a choice of electrified engines ranging up to 129bhp, the Mazda 2 has just one: a 114bhp, three-cylinder 1.5-litre petrol unit, which will hit 0-62mph in 9.2sec.

Our extensive drive in the Mazda 2 returned 60.3mpg, which is very respectable indeed, if not quite as high as Mazda advertises. 

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Claimed economy: 70.6mpg

Our economy: 62.3mpg

If you’re after more than just efficiency from your urban runabout, it’s likely you’ll need a Yaris in either Design or Excel specification

Efficiency has always been the key mantra of the Toyota Yaris, and to this day it is a bell-ringer for low running costs.

Toyota itself claims an economy figure of 70.6mpg, which differs from the mechanically similar Mazda 2 due to specification changes, such as larger wheels. 

You'll see a lot of those economical benefits in town, where Toyota claims the small hatchback can run on electric power for 80% of the time when travelling at low speeds. 

Regardless of how you drive, you're unlikely to see south of 50mpg. Our tests returned an impressive 62.3mpg in the lower-powered, 115bhp engine, while the more potent 129bhp car produced 56.3mpg. 

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Claimed economy: 67.3mpg

Our economy: 59.4mpg

A welcome part of the facelift is a return for the six-speed manual gearbox in place of the five-speeder Renault offered before this round of revisions

Possibly the best small car on this list to drive every day, the Renault Clio is also one of the most economical on sale in the UK today. 

Two engines are available: a 1.0-litre three-cylinder petrol engine (badged TCe 90) and the full hybrid E-Tech.

Both offer impressive levels of frugality, with the pure petrol car claiming 54.3mpg and the full hybrid 67mpg. Should you opt for the E-Tech, you'll also get 143bhp and 106lb ft, with a 0-62mph time of 9.3sec. 

Our real-world tests returned 59.4mpg with this powertrain, while the TCe 90 resulted in routine scores over 50mpg.

More impressive still is the Clio's price point, starting at £18,995 for the petrol and £21,895 for the hybrid, making it one of the cheapest electric cars on sale. 

 

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Claimed economy: 65.9mpg

Our economy: N/A

Excellent looks, a premium finish, high equipment levels and good, easy fun behind the wheel all make this one to consider.

The Peugeot 208 is billed as the most efficient car to come from the Stellantis stable, with a claimed economy of 65.9mpg in its most penny-pinching set-up.

Three engine options are available, including two mild hybrids ranging from 99bhp to 134bhp. There's a regular turbocharged petrol engine too, while the e-208 takes care of those after a fully electric model. 

According to Peugeot, the most efficient model is the 208 Hybrid 110. The standard petrol is still a good choice for economy, though, with a claimed figure of 58.2mpg. 

Our tests in the standard petrol didn't live up to Peugeot's claim: we hit 47.9mpg. We're yet to properly test the hybrid on an in-depth economy run, but we anticipate the results to be far superior to the standard petrol. 

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Claimed economy: 64.6mpg

Our economy: 60.3mpg

The Golf's diesel efficiency is unmatched in any other kind of powertrain and should still be seriously considered by anyone doing lots of motorway miles.

The venerable Volkswagen Golf has several powertrains capable of remarkable economy figures, ranging from pure petrol to plug-in hybrids with 88 miles of electric range. 

Away from plug-in hybrids, though, the two best picks for economy are the 150PS eTSI mild-hybrid or the now old-school 2.0 TDI. 

Both throw up some seriously impressive figures. When we roadtested the eTSI mild-hybrid, the Golf returned a figure of 60.0mpg, and the 2.0 TDI inched ahead of it with 60.3mpg. 

Both considered motorway miles and some more throttle-heavy B-road driving, and ultimately shows the Golf is still close to the top of the class for commuting. 

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Claimed economy: 64.2mpg

Our economy: 60mpg

It's as easy to drive as it is to get comfortable in. It has massive boot space and even its entry-level engine doesn’t feel underpowered.

The largest car on this list, the Skoda Octavia, offers a similar powertrain selection to the Volkswagen Golf. 

Its most impressive economy figure is offered by the same 2.0 TDI we enjoyed in the Golf but with a claimed figure of 64.2mpg. 

Our tests returned a frugal 60mpg, making the Octavia perfect for motorway driving. It's a genuienly long-range warrior, and you'd likely get around 500 miles out of a single tank of fuel. 

You should also consider the 1.5 mild-hybrid, however. Like the Golf, you could likely see above 70mpg in the right conditions, meaning additional savings. 

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Claimed economy: 64.2mpg

Our economy: 60.3mpg

When the Swift is fitted with the CVT, Suzuki claims 58.8mpg and 108g/km of CO2.

The Suzuki Swift is a small car with bags of character, owing to its involving chassis, energetic handling and enjoyable manual gearbox. 

Another reason it's worth considering is its economical powertrain, of which there is a sole option: a 1.2-litre naturally aspirated three-cylinder engine with mild-hybrid assistance. 

Suzuki claims it's 7% more efficient than the engine it replaced, achieving an official figure of 64.2mpg when selected with a manual gearbox. 

Best of all, we found this figure to be absolutely achievable in the real world, hitting an average of 60.3mpg in our roadtest. 

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Claimed economy: 62.4mpg

Our economy: 60mpg

There's an ‘EV’ button, but the car’s pure-electric capabilities are so limited that you’re much better off just letting the computers decide.

It's no surprise to see the Toyota Corolla on a list of the most economical cars on sale. The Japanese rival to the Volkswagen Golf is a byword for economy and efficiency in the industry.

Toyota claims an outstanding 62.4mpg from its entry-level 1.8-litre hybrid engine, and 62.7mpg in the more powerful 2.0-litre car. 

Our long-term test of the Corolla which used a 1.8-litre variant, returned a figure of 60mpg, but in some instances our tester even hit as high as 72.6mpg. 

We've used our average figure here to illustrate the Corolla's day-to-day economy, but we reckon those low-70 figures will be achievable on a regular basis.  

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Official economy: 62.8mpg

Our economy: 56mpg

In many respects, the Jazz feels like an EV to drive, with performance delivered in a smooth and progressive manner.

The Honda Jazz is another economical option in the real world, complete with an EV-only mode and some enticing numbers on paper. 

Power comes from an e:HEV full hybrid system, which combines a 1.5-litre petrol engine with a battery and two electric motors to produce 120bhp and 187lb ft. 

Honda quotes a figure of 62.8mpg, but our tests returned slightly less economical 56mpg. Still, impressive nonetheless. It's not far off the Toyota Yaris, and the Honda actually comes closer to hitting its claimed figure. 

Rivals like the Yaris and the Clio might save you more in the long run, though, when you consider the Jazz's significantly higher list price, which starts at around £28,000. 

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Claimed economy: 61.4mpg

Our economy: 58.7mpg

Our peak MPG reading was 50.1mpg, but our lowest was only 47.8mpg, so fuel consumption was at least consistent. Either way, 400 miles out of a tank was easily doable.

Vauxhall's alternative to the Peugeot 208 is the Vauxhall Corsa, with which it shares its underpinnings and its hybrid engine.

The result is another frugal supermini with lots of potential to boost your daily economy, with a claimed figure of 61.4mpg when using the 1.2-litre hybrid engine.

Our tests in the entry-level 1.2-litre turbocharged petrol car, equipped with the manual gearbox, returned 51.8mpg. Our long-term test in the hybrid produced an even more impressive 57.8mpg. 

Importantly, the Vauxhall was consistently economical over our long-term test, meaning it should be ideal to live with day to day. 

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CHOOSING THE BEST ECONOMICAL CAR

Choosing the best economical car isn't simply down to its miles-per-gallon figure. You'll likely want a practical car, too, which puts the Skoda Octavia and Volkswagen Golf near the top of our list. If you're after a smaller model, there are several other options on this list to fulfil your needs. Regardless, all cars here will easily achieve 50mpg and above with careful driving. 

HOW WE TESTED AND SELECTED

This list draws upon lived experiences from the Autocar roadtest team, as well as our long-term test car drivers. All figures are reported in European miles-per-gallon (MPG), while official manufacturer figures are based on the WLTP test cycle. 

This list includes petrol, diesel, mild-hybrid and full-hybrid models. Economy figures are calculated on a closed test track and take into account ‘touring’ economy and 'everyday' economy. 

'Touring' economy is representative of UK motorway driving, and ‘everyday’ economy accounts for intra-urban driving. 

We’ve excluded plug-in hybrid cars due to unrealistic economy figures often in the several hundreds of miles per gallon, which we deem as unrealistic unless you keep the batteries charged.

FAQs

How is fuel economy measured?

Fuel economy in the UK is measured in miles per gallon (MPG). The higher the MPG, the further a car can travel on a gallon of fuel. Figures are usually based on WLTP (Worldwide Harmonised Light Vehicle Test Procedure) standards.

What is good MPG for a car?

This depends on how you drive, but a car with a good miles-per-gallon rating is one which can reach over 50mpg. Some modern hybrids can achieve even higher, into the 60s or 70s for MPG. 

What's the most efficient type of car?

The most efficient type of car will use electrification, either in the form of full-hybridisation or as a plug-in hybrid. We've excluded PHEVs from this list as they're tough to keep charged if you don't have a home charger. 

How can I improve my fuel economy?

You can impact your fuel economy in several ways. You should avoid hard acceleration or braking to consistently use less power when driving. It's also important to ensure your tyres are properly inflated, minimise idling and reduce weight and drag.     

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