Toyota Prius MPG & CO2 emissions

The Toyota Prius delivers amazing efficiency for a conventional hybrid car, so it should be very cheap to run

MPG (comb) MPG (urb) MPG (ex-urb) CO2
83.1mpg 80.7mpg 85.6mpg 78g/km

Strong economy puts the Prius at the top of its class, which means you can run it on a relative shoestring. The car intelligently uses the hybrid setup itself to maximise the efficiency on offer.

Toyota Prius range

With claimed fuel economy of up to 83.1mpg combined and CO2 emissions as low as 78g/km, the Prius is an incredibly efficient vehicle. Of course, these are official claims so take them with a pinch of salt, but compared with its closest rival, the Hyundai Ioniq, it’s more efficient. The Hyundai claims vital stats of 78.5mpg and 84g/km CO2.

These figures are for the lower trim level Prius models, which come on 15-inch wheels. These mean the economy should be strong, while the smaller rims also improve the ride quality.

If you go for a higher spec trim level (Business Edition Plus and above) these stats aren’t quite as good, at 78.5mpg combined and 82g/km CO2. However, this importantly doesn’t affect the group the Prius falls into for company car tax (19% Benefit-in-Kind) so you don’t pay a financial penalty if you’re a business user, while road tax remains the same too.

It’s a similar story for the Ioniq though – the higher spec trim level on 17-inch wheels claims 70.6mpg and 85g/km CO2. Although both Ioniqs fall into the same BiK company car tax bracket as the Prius, so running costs will be similar.

Our sister title Auto Express has extensively tested the Prius and found that you can expect around 58mpg, which was roughly 10mpg more than the Hyundai, so the Prius exerts its authority when it comes to economy – let’s face it, this is what hybrid cars are about.

With a 43-litre fuel tank, based on these real-world figures you should expect a cruising range of around 550 miles. Given the Ioniq has a larger 45-litre tank, this is a fair bit more than the Hyundai’s predicted 474-mile range.

Charge time

As we’ve already explained, the regular Prius charges itself, so you can’t plug it in (although there is a Prius Plug-In available if you want even more efficiency).

The on-board computer monitors the battery charge level and determines which power source to use for the most effective energy deployment and therefore the most efficiency.

As well as charging the battery on the brakes the 1.8-litre petrol engine can charge the battery. As the Prius’ battery capacity is 1.31kWh, it doesn’t take very long to charge. This isn’t quite as much as the Ioniq’s 1.56kWh battery capacity, but both use the battery and electric motor setups for assistance rather than out and out electric driving, and the Prius does so more effectively in our experience.

Battery warranty

Every new Toyota gets a five-year/100,000-mile warranty, which offers peace of mind. The Prius’s hybrid system components and battery is covered over this same period, so there’s five years or 100,000 miles of coverage, whichever comes first. However, for the battery cover you need to make sure you have the vehicle serviced by a Toyota Hybrid Electric Specialist.

Prius owners can also benefit from Toyota’s Extended Hybrid Battery Care cover package, which offers up to 11 years of warranty coverage with no mileage limit.