If you are considering buying a used Kia Niro, these are the common problems worth knowing about first. Our garage database tracks 2 known faults for this model, 2 of them rated high severity. Every one below is a repair bill a seller has good reason not to mention.
Free advert check
Found a Kia Niro for sale?
Paste the advert and we read it against its known faults, its MOT history and the DVLA record, and tell you what the seller has not. Free, about a minute, no card.
Works with any listing: paste the text from AutoTrader, Gumtree, eBay, Facebook Marketplace or a dealer’s own site.
Is the Kia Niro reliable?
The Kia Niro has 2 known faults in our database, 2 of them rated high severity. The most serious are gearbox (kia Motors (UK) recalled Niro Hybrid and Niro Plug-in Hybrid cars built between 1) and electrics (DVSA recall R/2019/167 (May 2019) covers about 5,000 UK Niro Hybrid). None of them makes the car a bad buy on its own; the risk is a seller who knows and says nothing.
That is a count of the faults we hold, not a reliability score. Popular cars get written about more, and a newer generation has had less time to show its faults.
Which Kia Niro years should you avoid?
No year is a write-off on its own. What matters is which serious faults a given year and engine can have, and whether the car in front of you has had them fixed.
Years and engines with a serious known fault
2016 to 2017, 1.6 GDi Hybrid and Plug-in Hybrid (6-speed dual-clutch): kia Motors (UK) recalled Niro Hybrid and Niro Plug-in Hybrid cars built between
2016 to 2017, 1.6 GDi Hybrid and Plug-in Hybrid (6-speed dual-clutch): DVSA recall R/2019/167 (May 2019) covers about 5,000 UK Niro Hybrid
Each one is set out in full below, with the symptoms, the typical mileage and a rough repair cost.
Generation 1 of 12 known faults · 4 owner reports · 7 good notes
Kia Niro (2016 to 2022) problems
Transmission/ClutchHigh severity🏛️ Official recall
Kia Motors (UK) recalled Niro Hybrid and Niro Plug-in Hybrid cars built between 1 November 2016 and 11 September 2017 in August 2018: burrs inside the dual-clutch gearbox's hydraulic clutch actuator housing can damage the oil seal, so oil leaks and collects in the phase cap, where it can cause an electrical short and, in extreme cases, a fire. Dealers inspect the actuator and repair or replace it free of charge
Rough guide
£0 (free safety recall)
Typical symptoms
no warning in most cases before a failure
oil around the hydraulic clutch actuator
electrical or transmission warning lights
Affected vehicles
Engines:
1.6 GDi Hybrid and Plug-in Hybrid (6-speed dual-clutch)
Typical mileage:
any miles
🔍 We have a specific pre-purchase check for this faultCheck an advert →
ElectricalHigh severity🏛️ Official recall
DVSA recall R/2019/167 (May 2019) covers about 5,000 UK Niro Hybrid and Plug-in Hybrid cars built between November 2016 and September 2017: contact pressure on the main relays in the hybrid power relay assembly, under the rear seat, can drop, so the relays heat up and can short, with a fire risk. The HEV warning light comes on and the car may not start. Dealers replace the main relays and inspect the assembly, replacing it if it shows heat damage, free of charge
Rough guide
£0 (free safety recall)
Typical symptoms
HEV warning light on the dashboard
car not starting
Affected vehicles
Engines:
1.6 GDi Hybrid and Plug-in Hybrid (6-speed dual-clutch)
Typical mileage:
any miles
🔍 We have a specific pre-purchase check for this faultCheck an advert →
What owners report on the Niro
4 single reports, unconfirmed
One owner each, in their own words rewritten as a line, and not counted in our risk scoring. A fault joins the list above once a second report or an editorial source backs it.
Engine · December 2019A 2019 Kia Niro hybrid experienced rough running at various times, eventually requiring a new cylinder head and injectors.
Engine · April 2019A 2017 Niro had a timing chain noise at its second service, traced to an oil supply issue; the short engine was replaced under warranty.
Interior · January 2019Using the heater in a Kia Niro PHEV significantly reduced EV range in winter, as it automatically started the petrol engine.
Brakes · April 2018A 2018 Kia Niro required a replacement part for a brake fluid leak, but the incorrect part for a left-hand drive model caused an eight-day delay.
What owners like about the Niro
7 notes
The SUV crossover offers a high driving position and easy access for occupants.
The under-load deck area of the boot is spacious enough to accommodate a full-sized spare wheel.
The Kia Niro offers consistent ride comfort, with little noticeable difference between 16-inch and 18-inch wheel options.
The DCT transmission integrates effectively with the engine and electric motor, handling steep hills without excessive revving.
The car achieved a five-star Euro NCAP rating with the Advanced Driving Assistance Pack, scoring well in adult and child safety.
With standard equipment, the car received a four-star Euro NCAP rating, including 83% for adult occupant protection.
The self-charging hybrid's 12v battery is part of the main hybrid battery, with a dashboard switch to recharge it if flat.
Sellers rarely admit these faults outright
We track 4 specific phrases sellers use in adverts to soft-pedal these exact issues. Paste any Kia Niro advert and we check it in seconds.
Repair costs are typical UK ranges, not quotes. Actual cost depends on condition and garage.Data last verified: October 2026
Kia Niro buying questions
Which Kia Niro years should I avoid?
No Kia Niro year is a write-off, but the Niro (2016 to 2022) carries the most serious faults: gearbox and electrics. Year matters less than whether the specific car has had the known fixes, so check the history for them.
What should I check when viewing a used Kia Niro?
Ask the seller about the gearbox and electrics faults on this page and whether they have been fixed, with invoices. On the test drive watch for no warning in most cases before a failure and HEV warning light on the dashboard. Read the MOT history for repeat advisories, then paste the advert into the free check, which reads it against its known faults before you travel. Check a Kia Niro advert →
What is the real MPG of a Kia Niro?
Owners report 58.8 mpg on average across the Kia Niro engines with data, about 69% of the official combined figure. The gap between official and real-world economy varies a lot by engine, so the Real MPG page lists every engine and generation separately, from 421 owner submissions. Kia Niro Real MPG by engine →
If you used to check the Honest John “Good & Bad” section before the site closed in 2026, this page is where that information now lives. We rebuilt the Kia Niro owner-report history from the archived Honest John dataset, added our own research, specialist and owner-club sources and DVSA recall data, and we keep it free. Each fault above is badged with its source. The same data feeds our free advert check, which reads a listing against every known fault for the exact engine and year.