Kia K4 Review: Price, specs & boot space

Kia K4 at a glance:

• Body type: Hatchback
• Price range: £26,045 - £36,245
• MPG: 42.2-49.6mpg
• Number of seats: 5 
• Boot capacity: 438 litres
• Insurance groups: 16-27

Kia K4: Everything you need to know 

In summer 2025, we bid farewell to the Kia Ceed. It wasn't exactly a sad goodbye – the most interesting thing about it, ignoring its exploits on a certain motoring programme, was the odd use of the apostrophe in the name originally ('C'eed', if you've forgotten) before Kia saw sense and changed it. 

The anonymously styled hatchback was more about offering good value than desirability, but still, it was a shame to see it disappear when petrol-powered hatchbacks are looking like an endangered species, especially in light of the deaths of the Ford Fiesta and Ford Focus. Thankfully, Kia has a replacement, and it's called the Kia K4. 

That's a remarkably straightforward name considering what its predecessor was called, but the looks are much more angular this time. Maybe too angular. We have to give credit to Kia for not making it boring, but it might prove a bit 'out there' for some buyers considering something like a Volkswagen Golf.

Although it's a brand-new car in the line-up, it uses more familiar ingredients, sharing much in common with the Kia Niro and Hyundai Kona. You won't find any proper hybrid engines here as you do with those two, though. The K4 has an engine line-up that looks disarmingly old-school these days, comprising solely of petrol engines, one of which has a mild-hybrid system. There's even a manual gearbox, should you not want an automatic. 

How we tested the Kia K4

We drove two versions of the K4 – a Pure-trimmed version with the 1.0-litre engine and a manual gearbox, and a GT-Line S with the 1.6-litre engine and an automatic. We drove each on a variety of different roads, including urban areas, dual carriageways and winding country roads. Because we drove the cars in the UK, much of the time, this involved, shall we say, 'challenging' road surfaces. 

During that time, we found the car to be perfectly competent in the corners, while remaining comfortable even over poorer road surfaces. It's not in any way exciting, but that's just fine. On the whole, the car comes across as more of a pragmatic rather than an emotive choice. 

The engine line-up isn't anything spectacular, and we found the automatic gearbox to be a little slow to respond, but both units get on with the job just fine, and even the 1.0-litre feels sufficiently brisk. The fuel economy is reasonable enough, too.

In terms of practicality, we were impressed with the rear legroom, but somewhat less dazzled by the awkward boot opening, and the big drop in boot volume for the 1.0-litre model thanks to its mild-hybrid system. 

The cabin design is a lot more successful than the old Ceed's, though. While it always felt a bit bargain basement, the K4 has a bang-up-to-date, minimalistic interior that exudes a kind of quality that goes beyond what you might expect at this sort of price. 

Is the Kia K4 a good car?

We'd consider the K4 a good car, but it's just that – 'good', and nothing more. It ticks all the right boxes in terms of practicality (boot space quirk notwithstanding), comfort and most definitely value, and you can't forget the icing on the cake that is Kia's seven-year warranty. But the K4 is not something you'll want to go out and buy because it's desirable, because we're not sure it is, even if it looks more interesting than the old Ceed. 

We're definitely happy it's here, though – even if the market is now heavily leaning towards SUVs, for most buyers, a hatchback still makes most sense. 

Although it doesn't seem remotely interested in providing a sporty driving experience, the K4 is nonetheless perfectly competent, staying level even when you take a corner or a roundabout a little quicker, and providing plenty of grip. There's more than enough traction, too, even on the most powerful versions. 

The K4 has a comfortable ride that only gets flustered over particularly broken-up tarmac, and it's more than capable of soaking up bigger jolts, such as those from speed bumps.

We'd rather there was a bit less wind noise, but it's nothing too excessive, and it's not like there's much in the way of road noise to make the K4 annoying at cruising speeds. 

Finally, the steering has a nice amount of weight to it, and the speed of the steering rack feels well judged. It doesn't provide much feedback from the road surface, but it's always predictable. 

There are no full hybrid engines or plug-in hybrids here, with the K4 available exclusively with petrol engines. The base 1.0-litre, three-cylinder turbo engine is a mild-hybrid, though, with a small battery providing very limited electrical assistance. It doesn't do much more than extend the stop/start function. 

Another old-school surprise on the drive system front is the availability of a manual gearbox. A lot of manufacturers simply don't bother nowadays, but the standard gearbox on the 1.0-litre versions of the K4 is a six-speed manual. It's a good one, at that, with a satisfying feeling of each ratio slotting in neatly, and with a light action of the clutch. 

The 1.0-litre engine isn't hugely potent, offering 115PS and 200Nm for a leisurely 0-62mph time of 12.2 seconds in the manual, and 12.3 in the auto, with each sharing a 115mph top speed. We didn't find it too sluggish despite how underwhelming those numbers are, and although it does need to be thrashed a bit if you want to join a dual carriageway with a bit of enthusiasm, it doesn't make the same kind of nasty racket you get from a Vauxhall Astra with the 1.2-litre PureTech engine.

You can spec a seven-speed dual-clutch automatic on the 1.0-litre K4, although that's your only option on the 1.6. It shifts smoothly, but takes forever to kick down when you want a bit of acceleration, meaning you often feel like you're not making the most of the extra power. 

How much extra depends, unusually, on your trim level. The GT Line version makes 150PS and 250Nm for torque, enabling a 0-62mph time of 9.1 seconds. In the GT Line S, you get 180PS and 265Nm of torque, dropping the 0-62mph time to 8.4 seconds.

The more powerful of the two still doesn't feel like a rocket ship, but it's nice not having to work it quite as hard as the 1.0-litre engine to make good progress. Being a four-cylinder unit, too, it's slightly smoother. 

Euro NCAP hasn't yet crash-tested the Kia K4. Along with a typical array of six airbags, you also get plenty of safety systems aimed at preventing an accident from happening in the first place, all fitted as standard. These include lane assistance, autonomous emergency braking and a driver attention monitor. 

One element we particularly like, and something also seen on various other Kia models, is the blind spot cameras, which give a great view down the sides of the car displayed in the instrument cluster each time you indicate. 

We're less enamoured with the driver attention monitor, which is extremely sensitive, and a couple of times couldn't seem to pick up the driver's face anyway. We're not keen on the lane assistance, either, which seems to trigger when you're nowhere near a white line, aggressively tugging at the steering. Finally, the speed limit warning, now a mandatory feature, is one of the more vocal we've encountered. 

The 1.0-litre automatic's towing capacity is weak, at just 300kg for unbraked loads and 710kg for braked. The manual version is much better, offering 500kg unbraked and 1010kg braked. It's the same unbraked capacity for the 1.6-litre engine, but the braked capacity goes up to a handy 1500kg. 

As the K4 is quite long compared to a lot of other hatchbacks in the same class, it's no surprise to see a decent boot space figure. It's 438 litres, which compares to a more modest 381 litres for the Volkswagen Golf and 361 litres in the Toyota Corolla, which drops to a frankly rubbish 313 litres if the 2.0-litre engine is specced. 

The K4 has its own boot capacity quirk, though. Spec the mild-hybrid, and there's a whopping 110-litre drop in boot space. To save you the maths, that leaves you with a far less impressive 328 litres of cargo space.

We've never seen such a large decrease in capacity for a mild-hybrid system, the packaging demands of which are usually much less drastic than a full-hybrid or plug-in hybrid setup. Having had a look at the boots of K4s both with and without the setup, the floor is noticeably higher in cars that have it, but even so, we're surprised the loss in capacity is as much as 110 litres. 

There's a pretty chunky lip to the boot, which won't be much fun when loading in bulkier items. Even in mild-hybrid cars, there's a sizeable drop to the boot floor. 

The rear seats fold in a 60/40 split, giving a total of 1217 litres, or 1107 litres in the mild-hybrid. A 40/20/40 split might have been nice, but there is a handy ski flap in the middle of the bench for loading long and thin items through. For UK drivers, can't help but think it's more likely to be used for something like skirting boards from B&Q than actual skis. 

Kia K4 dimensions

The K4 is 4440mm long with a 2720mm wheelbase. It's 1435mm tall, and 1850mm wide not including its door mirrors. This makes it 116mm longer than a Volkswagen Golf, with an 84mm longer wheelbase. This helps explain why the rear legroom is so much better than the Golf's, and why the boot space is superior, too. 

Although the Kia K4 is significantly cheaper than a Volkswagen Golf, it doesn't feel that way inside. The chunky cabin has a solid feel to it, plus plenty of premium, soft-touch materials. As is usually the case, things look a bit less snazzy further down, but even then, the plastics used there aren't anything too nasty, and they're well out of sight. 

For the K4, Kia uses the now common tactic of sticking two identically sized screens (in this case, 12.3 inches) into one panel, with the left one on infotainment duties, and the right one forming the digital instrument cluster. However, as we've seen in a lot of Kia's other cars, there's also a 5.3-inch display nestling between the two, offering various climate functions. 

Don't panic, though, because you still get physical controls for the fan speed and temperature of the two front climate zones beneath the display panel. The little 5.3-inch display is mostly for airflow direction (screen, body, feet), so you won't need to interact with it very often. That's a good thing, as it's a little awkwardly placed, being potentially hidden by the steering wheel depending on your chosen driving position.

The infotainment system, meanwhile, responds quickly to touch inputs and features a simple menu system you can get your head around very quickly. 

All versions of the K4 get navigation as standard, but Android Auto and Apple CarPlay are also included across the board, should you prefer to use something like Google Maps streamed from your phone. We used the Android Auto connection and were up and running quickly and easily. 

These are the latest On The Road (OTR) prices for the new Kia K4 as of March 2026 – prices can change, so please use these as a guide before checking Kia's latest price lists.

Is the Kia K4 good value compared to rivals?

With the cheapest Volkswagen Golf costing around £29,000, £26k for an entry-level Kia K4 looks like great value. Equipment levels are decent, too, and we like that the options in the configurator are kept light for all versions. You aren't going be bumping up the RRP to add equipment you were expecting to get as standard.

The inclusion of an automatic on the base Pure model is welcome to see, as well. It's charged at a £1500 premium, making for a car that's much cheaper than the least expensive Golf auto, because Volkswagen doesn't even offer this on the entry-level Life grade. Instead, you need to splurge £31,875 on a Match with the 1.5-litre engine. 

The Vauxhall Astra is more in line with the K4, starting at £26,135, but it's not quite as good. Meanwhile, the Toyota Corolla and Honda Civic aren't the most helpful points of comparison, because they're only available with complicated hybrid engines, making them a lot pricier. It's nearly £31,000 for the cheapest Corolla, and getting on for £34,000 for the least expensive Civic. 

With all K4s comfortably priced under the £40,000 threshold for the government's expensive car tax supplement, it'll only be the standard £205 annual rate you'll need to pay on the car from year two onwards. 

The 1.0-litre mild-hybrid K4 is the clear choice for those wanting to eke out as much fuel economy as possible. Most versions are capable of 49.6mpg according to the WLTP combined cycle, with the GT Line S faring slightly worse at 48.7mpg. 

The 1.6-litre K4's economy is claimed at 43.6mpg, but again, there's a penalty for opting for the range-topping GT Line S, which returns 42.2mpg. 

Kia ranked 8th for reliability out of 33 brands in the most recent HonestJohn.co.uk Satisfaction Index ownership survey, suggesting faults are reasonably rare. Should a problem arise, there's Kia's much better than average seven-year, 100,000-mile warranty as reasurring back-up. 

Insurance groups range from 16 to 24, which is about what we'd expect for a car like this. 

Frequently asked questions

What is a Kia K4?

The Kia K4 replace the Kia Ceed. It's a hatchback in what's known as the 'C-segment', meaning it's a similar size to cars like the Volkswagen Golf and Vauxhall Astra.

When is the Kia K4 coming out?

The Kia K4 is available to order now, and the first deliveries have already taken place. An estate version will join later in 2026. 

How much is a Kia K4? 

Prices for the Kia K4 start at just over £26,000, rising to about £36,000. 

The Kia K4 range is split into three trim levels which will sound familiar if you've look at any other recent models from the brand. They are Pure, GT-Line and GT-Line S.

The Kia K4 Pure comes with the following equipment fitted as standard: 

• Rear parking sensors
• Reversing Camera
• Cruise control
• Electrically adjustable and heated mirrors
• Wireless Apple CarPlay
• Android Auto 360-degree parking camera
• 12.3-inch digital instrument cluster 
• 12.3-inch touchscreen infotainment system
• 16-inch alloy wheels 

Opting for the Kia K4 GT-Line upgrades the above spec with: 

• 17-inch alloy wheels
• Gloss black styling
• Electrically folding mirrors
• Rear side and tailgate tinted windows
• Heated front seats
• Heated steering wheel
• Electric driver's seat adjustment
• Wireless phone charger 

The top-spec Kia K4 GT-Line S adds:

• 18-inch alloy wheels (1.6 only)
• Sunroof
• Artificial leather upholstery
• Ventilated front seats
• Heated outer rear seats
• Eight-speaker Harman Kardon sound system