Parkers overall rating: 4 out of 5 4.0

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

Petrol engines 4.5 - 7.1 mpp
Diesel engines 7.1 - 7.6 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 33.6 - 53.3 mpg
Diesel engines 57.6 - 61.4 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 61.4mpg. Go for the auto and this goes down slightly to 58.9mpg.

Petrol models aren’t unreasonably costly to run either. The 1.0 T-GDI returns up to 54.3mpg according to Hyundai, while the more powerful 1.5 T-GDI returns up to 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, but 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 4.5 - 7.6 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 126g/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 1.0-litre petrol auto, which pumps out 120g/km in SE Connect specification. Thanks to clever gearing, it outperforms the manual version by 1g/km.

The 1.5 T-GDI pushes out 138g/km of CO2 in manual, and 142g/km in automatic form, which isn’t too much in the grand scheme of things.

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 appears to be 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 - £165
See tax rates for all versions
Insurance group 8 - 28
How much is it to insure?