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Kia EV4 vs Smart #5
Selected trimStandard Range 58.3kWhChange trim270 mi · 58.3 kWh · £34,745
At a glance
In this comparison, Kia EV4 leads on motorway range, charging speed and running costs, while the Smart #5 leads on value for money and family practicality.
Which should you choose?
Choose the Kia EV4 if...
- you do long motorway journeys - it has the best estimated real-world range at speed
- you need the fastest charging of these options
- you want the lowest running costs - from just 1.8p per mile on off-peak electricity
- you need the best car for city driving and tight parking
Choose the Smart #5 if...
- you want the most for your money - best overall spec per pound
- you have a family - it has the best combination of boot space, safety, and rear legroom
How we reached the recommendation
Verdict
Our take
The Kia EV4 leads in the most categories, but each car here has its strengths.
ValueSmart
Kia
5.6
Smart
6.4
Motorway RangeKia
Kia
5.9
Smart
2.7
FamilySmart
Kia
7.9
Smart
9
ChargingKia
Kia
6
Smart
5
Cost Per MileKia
Kia
8.4
Smart
1.6
City DrivingKia
Kia
5.7
Smart
3.2
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
Key specifications
Compare the key specifications for your selected trims.
Size Comparison
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Kia EV4
Smart #5
Length
Kia EV44,430mm-265mm
Smart #54,695mm
Width
Kia EV41,860mm-60mm
Smart #51,920mm
Height
Kia EV41,485mm-220mm
Smart #51,705mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | Kia EV4Standard Range 58.3kWh | Smart #5Pro |
|---|---|---|
| Length | 4,430 mm | 4,695 mm |
| Width (mirrors folded) | 1,860 mm (better) | 1,920 mm |
| Width with mirrors out | Not available | 2,169 mm |
| Height | 1,485 mm | 1,705 mm |
| Turning circle | 10.9 m | Not available |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 540 mm spare (better) | 480 mm spare |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
How each stacks up
Percentile ranks against UK EVs of the same body style.
Kia EV4
- At 4,430 mm, longer than 95% of hatchback EVs we track.
- 270 mile WLTP range, longer than 90% of hatchback EVs we track.
- Eligible for the full £3,750 UK Electric Car Grant, one of 8 hatchback EVs we track that qualifies for the top band.
Smart #5
- Boot space of 630 L is bigger than 90% of SUVs we track.
- One of 33 of 232 UK EVs in our catalogue with V2L (vehicle-to-load) support.
Full specifications
| Specification |  Kia EV4 Standard Range 58.3kWh |  Smart #5 Pro |
|---|---|---|
| Dimensions | ||
| Length | 4.43m | 4.70m+265mm |
| Width | 1.86m | 1.92m+60mm |
| Width (mirrors) | Not available | 2.17m |
| Height | 1.49m | 1.71m+220mm |
| Wheelbase | 2.72m | 2.90m+180mm |
| Ground Clearance | Not available | 190mm |
| Capacity | ||
| Boot (seats up) | 435L | 630L (better) |
| Boot (seats down) | Not available | 1530L |
| Frunk | Not available | 47L |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 10.9m | Not available |
| Kerb Weight | 1,825kg (better) | 2,200kg |
| Towing Capacity | Not available | 1,600kg |
| Electric | ||
| Battery | 58.3kWh | 76kWh (better) |
| Range (WLTP) | 270 mi | 288 mi (better) |
| Max DC Charge | 127kW | 150kW (better) |
| Pricing | ||
| UK MSRP | £34,745 (better) | £39,800 |
| Price after EV grant | £30,995 (-£3,750) | £39,800 (not eligible) |
| Details | ||
| Body Style | Hatchback | SUV |
| Available | 2025+ | 2025+ |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | Kia EV4Standard Range 58.3kWh | Smart #5Pro |
|---|---|---|
| Official range (WLTP) | 270 miles | 288 miles (better) |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 226 miles (better) | 202 miles |
| 10-80% rapid charge time | 31 min | 30 min (better) |
| Max rapid charge rate | 127 kW | 150 kW (better) |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | Not available | 185 Wh/km |
| Usable battery capacity | 58.3 kWh | 76 kWh (better) |
| Battery chemistry | NCMA | LFP |
| Battery architecture | 400V | 800V (better) |
| Heat pump | Not available | Not standard |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
What the critics say
See how UK motoring publications rate each car in their road tests.
Kia EV4
Standard Range 58.3kWh
Smart #5
Pro
Watch the reviews
Watch selected video reviews here, or visit each model page for the full collection.
Kia EV4
All 3 videos
Reviews and videos discuss each model overall; the specifications above apply to your selected trims.
Prices & deals
Calculate your real costs
For a useful running-cost comparison, factor in your mileage, charging access and current petrol or diesel car alongside the EV estimate.
Compare with petrol or diesel
Compare purchase price, energy, road tax and maintenance with a petrol or diesel alternative.
Calculate company-car tax
Work out monthly Benefit-in-Kind using current and future HMRC rates.
Cost per mile
Compare EV charging costs per mile with petrol and diesel using your charging options.
Safety & ownership confidence
Euro NCAP - Kia EV4 Standard Range 58.3kWh
Tested 2025
Adult Occupant84%
Child Occupant85%
Vulnerable Road Users77%
Safety Assist78%
Euro NCAP - Smart #5 Pro
Tested 2025
Adult Occupant88%
Child Occupant93%
Vulnerable Road Users84%
Safety Assist92%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
Buying options
Get a quote
Kia EV4
Used on AutoTraderLease deals
Smart #5
Used on AutoTraderLease deals
Frequently asked questions
Is the Smart #5 worth the extra £5,055 over the Kia EV4?
The Smart #5 costs £5,055 more than the Kia EV4. For that premium it adds 195 litres more boot space and 100 kW more power. On EVcarsguide's combined category scores, the Kia EV4 comes out ahead overall.
Which is cheaper to own over 5 years, the Kia EV4 or the Smart #5?
The Kia EV4 is £5,055 cheaper to buy. The Kia EV4 is cheaper to charge, roughly £144 a year versus £200 for the Smart #5, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Kia EV4 comes out roughly £5,335 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.
What are the Kia EV4 and Smart #5 like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 226 miles for the Kia EV4 and 202 miles for the Smart #5 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Kia EV4 goes roughly 24 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 30-31 minutes.
Which is easier to park and drive in town, the Kia EV4 or the Smart #5?
The Kia EV4 is the easier car for tight UK car parks: it is 60 mm narrower than the Smart #5. In a standard 2,400 mm bay that leaves about 540 mm of total clearance for the Kia EV4 and about 480 mm of total clearance for the Smart #5.
Which battery will hold up better as a used buy, the Kia EV4 or the Smart #5?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 89% battery health for the Kia EV4 and 90% for the Smart #5. That is close enough that capacity loss should not decide between them. The Smart #5's LFP-type pack tolerates daily 100% charging, while the Kia EV4's NMC-type pack lasts longest kept to about 80% for everyday use. Both batteries carry a 8-year manufacturer warranty.
Go deeper on each car
Visit the full model pages for owner feedback, expert reviews, used prices and battery-health information.
Compare against other rivals
Compare similarly sized and priced electric cars before finalising your shortlist.
More Kia EV4 comparisons
More Smart #5 comparisons
See both cars in our rankings
EVcarsguide scores every verified EV on price, range, family use and running costs. Here is where this pair appears.
Where the Kia EV4 and Smart #5 rank among the best family EVsWhere the Kia EV4 and Smart #5 rank among EVs under £40,000Where the Kia EV4 and Smart #5 rank among the best motorway EVsWhere the Kia EV4 and Smart #5 rank among the best city EVsWhere the Kia EV4 and Smart #5 rank among the cheapest EVs to runWhere the Kia EV4 and Smart #5 rank among EVs with the biggest boots
Further reading
Explore buying and ownership guides to help you choose between these electric cars.
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .