Parkers overall rating: 4.2 out of 5 4.2

Miles per pound (mpp) Miles per pound (mpp)

Petrol engines 7.3 - 10.4 mpp
Diesel engines 11.9 - 12.1 mpp
Low figures relate to the least economical version; high to the most economical. Based on WLTP combined fuel economy for versions of this car made since September 2017 only, and typical current fuel or electricity costs.

Fuel economy

Petrol engines 34.0 - 48.7 mpg
Diesel engines 58.9 - 60.1 mpg
  • No i30 will cost a lot to run
  • Petrols are efficient
  • Diesel offers lowest bills

Hyundai has built a reputation for low-cost motoring, and the i30 does little to break the mould here. The 1.6-litre CRDi diesel offers the most appealing running costs, with claimed economy levels of up to 58.9mpg. Go for the DCT automatic and this slightly improves to 60.1mpg.

Petrol models aren’t unreasonably costly to run either. The 1.0 T-GDI returns up to 49.6mpg according to Hyundai, while the more powerful 1.4 T-GDI returns 44.1mpg. Figures for this engine with the DCT gearbox also improve slightly, with 45.6mpg.

The Hyundai i30 N claims to achieve 34.0mpg under the latest WLTP regime. While these figures compare well to its rivals on paper, it'll be easy to see less than 30mpg in everyday driving. It’s also worth noting the 50-litre fuel tank, which is fine on more economical i30s, equates to a range of just over 300 miles per fill-up for the N, so fuel stops will feel more frequent - especially if you make the most of the exciting performance on offer.

In miles per pound terms, the i30 doesn't set new standards, but nevertheless remains a cost-effective choice with a range of 7.3 - 12.1 mpp.

Other running costs are low

But it’s the other running costs that impress more. The i30 comes with Hyundai’s five-year unlimited-mileage warranty along with breakdown cover and annual health checks for the same period of time, while servicing costs can be kept in check with one of three Hyundai Sense service plans to cover servicing and maintenance costs, lasting two, three or five years.

Hyundai usually has some tempting offers for customers buying their new car on finance, and it should be no different for the i30.

How low are the i30's CO2 emissions?

Company car drivers will find the diesel automatic tempting for its 125g/km CO2 output, which means low BIK taxation, but don’t dismiss the cheaper and nicer-to-drive 1.0-litre petrol either – it might work out better value in the long-run if you don’t do huge amounts of motorway miles.

The pick of the Hyundai i30 range as far as CO2 emissions go is the diesel manual, which pumps out 124g/km in S specification. If you’re more bothered by NOx and particulate emissions, however, we’d advise you look at the 1.0-litre T-GDI engine instead. Only available on lower trim levels, this can have CO2 output as low as 133g/km of CO2.

The 1.4 T-GDI pushes out and 146g/km of CO2, which isn’t too much in the grand scheme of things, but it’s more than most of its rivals when you consider the size of the car and its engine. The DCT automatic achieves a slightly better 141g/km of CO2. With the latest WLTP figures, the Hyundai i30 N emits 188g/km of CO2.

While there’s no hybrid version on offer, if you want a more eco-friendly Hyundai, you can pick between electric, plug-in hybrid and hybrid versions of the Ioniq, as well as the Kona Electric.

How reliable is the i30?

  • Hyundai has a good reliability record
  • Its cars feel solid and well built
  • No recalls for this model as yet

Hyundai’s reliability record has quietly been gaining notoriety in the car industry in recent years and the result is an enviable reputation for building robust cars. 

We suspect the new i30 will continue this trend: the tech is all tried and tested in other cars and there isn’t anything new or alarming to fail.

The i30 hasn’t had any recalls in its latest form according to the government's DVSA official recalls website, which is an impressive effort - a good sign of how thorough Hyundai tested the car before putting it on sale, and of the build quality standards of the factory.

Ongoing running costs

Road tax (12 months) £0 - £150
See tax rates for all versions
Insurance group 8 - 28
How much is it to insure?