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Hyundaii30 Fastback (2018-2021)

Medium
Petrol/Diesel/Mild hybrid
Used only

£10,391Typical price

Test score

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The third-generation Hyundai i30 was launched in hatchback and estate forms in 2017, before being joined in 2018 by a Fastback 'five-door coupé' version. Adding some styling panache to the medium-size car market, does the Fastback deliver both style and substance? Read our full Hyundai i30 Fastback review to find out.

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What's included?

What is it?
What's it great at?
What's it like to drive?
How reliable are Hyundai's cars?
How comfortable and spacious is it?
How economical is it to run?
How safe is it?
Is there anything I should look out for?
Should I buy it?

KEY TEST RESULTS
Comfort and practicality
Brand reliability 0-4 years

Nov 2024Last checked by Which?
Sept 2018First reviewed by Which?
Jan 2018Released

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

How we test cars

6 Jun 2025

Ease of driving

Overall
Visibility
Smoothness of power delivery
Driving stability
Cabin layout

How we test ease of driving

To find out how easy a car is to drive, we assess cars across a number of areas from visibility and handling to the layout of the cabin and how smoothly the engine delivers its power.

Performance

Overall
In-gear acceleration
Brakes

How we test performance

We test braking distances and whether the effectivess of the brakes fade with repeat use. Performanc is based on in-gear acceleration.

Comfort and practicality

Overall
Entry and exit
Seat comfort
Ride quality
Quietness
Seat space
Boot space (small SUVs and medium cars)

How we test comfort and practicality

Comfort and practicality includes how easy it is, or not, to get in and out of the car and the maximum height of occupants. We also measure road, wind and engine noise and assess how well the car deals with bumps from large potholes to jittery surfaces like cobble stones.

Euro NCAP

How we test euro ncap

Any car that receives a rating of two stars or less from Euro NCAP is made a Don't Buy. Any car that receives three stars can't be a Best Buy. If a car has been available for more than four years and has not been tested by Euro NCAP, it cannot be a Best Buy.

Safety kit

How we test safety kit

We factor in the safety equipment that’s factory-fitted or optional, along with how well the car protects its occupants and pedestrians in the event of an accident. We also test how easy it is to fit a variety of child car seats.

Brand reliability 0-4 years

Overall
Electric car reliability
Full hybrid reliability
Plug-in hybrid reliability
Petrol reliability

How we test brand reliability 0-4 years

Our reliability ratings are based on the feedback from tens of thousands of UK motorists, as collected in our annual Which? car survey. We divide all reliability feedback into three age groups: cars aged up to four years, five to nine years, and 10 to 15 years.

Brand reliability 5-9 years

Overall
Diesel reliability

Brand reliability 10-15 years

Overall
Petrol reliability
Diesel reliability

General
Class	Medium
Luxury	No
Convertible	No
Availability	Used only
Used price	£10,391 - £15,063
Fuel type	Petrol/Diesel/Mild hybrid
Tested fuel efficiency	42.2mpg
Length	4,455mm
Width (excluding wing mirrors)	1,795mm
Width (including wing mirrors)	2,040mm
Height	1,425mm
Driver max height
Second-row passenger max height
Boot space with seats up
Boot space with seats down
Number of seats	5
Folding rear seats	Yes
Isofix attachments	Yes
Turning circle	11.3 m
On sale date	01 January 2018
Lowest pence-per-mile cost	£14.44

Latest tested engine
Engine and trim name	1.4 T-GDI Premium DCT
Fuel type	Petrol
Capacity and power	1.4-litre (140hp)
Transmission	7-speed dual-clutch automatic
Driven wheels	Front-wheel-drive (FWD)
Fuel tank capacity	50 litres
Tested fuel economy: City / Out of town / Motorway (mpg)
Tested fuel economy: Combined (mpg)
Cost per mile	14.44p per mile
Cost of filling tank	£67
Monthly fuel cost
Annual fuel cost
NOx level	Extremely Low (trace)
CO level	Low
CO2 at tailpipe/tank-to-wheel (TTW) (g/km)	155
Official fuel economy: NEDC	50.4
Official Euro emission level	Euro 6b
Braked tow load (KG)	1400kg
Unbraked tow load (KG)	600kg
Engine test date	07 May 2018
Test programme	2017

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Hyundaii30 Fastback (2018-2021)

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