In this comparison, BMW i4 leads on value for money, running costs and city driving, while the Hyundai IONIQ 6 N leads on motorway range and charging speed.
Choose the BMW i4 if...
Choose the Hyundai IONIQ 6 N if...
Our take
The BMW i4 leads in the most categories, but each car here has its strengths.
Too close to call
See the specification differences behind the verdict, with supporting figures for each advantage.
Base
Compare the key specifications for your selected trims.
| Measure | BMW i4eDrive40 M Sport | Hyundai IONIQ 6 NBase |
|---|---|---|
| Price | £53,405 (better) | £65,800 |
| Official range | 367 miles (better) | 303 miles |
| Boot space | 470 L (better) | 371 L |
| 10-80% rapid charge | 31 min | 18 min (better) |
| 0-62 mph | 5.7 sec | 3.2 sec (better) |
Size Comparison
Length
Width
Height
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BMW i4eDrive40 M Sport | Hyundai IONIQ 6 NBase |
|---|---|---|
| Length | 4,783 mm | 4,935 mm |
| Width (mirrors folded) | 1,852 mm (better) | 1,940 mm |
| Width with mirrors out | 2,073 mm (better) | 2,144 mm |
| Height | 1,448 mm | 1,495 mm |
| Turning circle | 12.5 m | 12 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 548 mm spare (better) | 460 mm spare |
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | BMW i4eDrive40 M Sport | Hyundai IONIQ 6 NBase |
|---|---|---|
| Seats | 5 | 5 |
| Boot space (seats up) | 470 L (better) | 371 L |
| Boot space (seats down) | 1290 L | Not available |
| Frunk | 0 L | Not available |
| Towing capacity (braked) | 1,600 kg | Not available |
| Specification | BMW i4 eDrive40 M Sport | Hyundai IONIQ 6 N Base |
|---|---|---|
| Dimensions | ||
| Length | 4.78m | 4.93m+152mm |
| Width | 1.85m | 1.94m+88mm |
| Width (mirrors) | 2.07m | 2.14m+71mm |
| Height | 1.45m | 1.50m+47mm |
| Wheelbase | 2.86m | 2.96m+109mm |
| Ground Clearance | 125mm | Not available |
| Capacity | ||
| Boot (seats up) | 470L (better) | 371L |
| Boot (seats down) | 1290L | Not available |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 12.5m | 12m (better) |
| Kerb Weight | 2,125kg (better) | 2,201kg |
| Towing Capacity | 1,600kg | Not available |
| Electric | ||
| Battery | 83.9kWh | 84kWh (better) |
| Range (WLTP) | 367 mi (better) | 303 mi |
| Max DC Charge | 200kW | 350kW (better) |
| Pricing | ||
| UK MSRP | £53,405 (better) | £65,800 |
| Details | ||
| Body Style | Saloon | Saloon |
| Available | 2021–2026 | 2026+ |
* BMW i4: Launch figures. Cars built from July 2024 (facelift) have 81.3 kWh usable, 205 kW DC charging and up to 373 miles WLTP.
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | BMW i4eDrive40 M Sport | Hyundai IONIQ 6 NBase |
|---|---|---|
| Official range (WLTP) | 367 miles (better) | 303 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 261 miles (better) | 252 miles |
| 10-80% rapid charge time | 31 min | 18 min (better) |
| Max rapid charge rate | 200 kW | 350 kW (better) |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | 160 Wh/km | Not available |
| Usable battery capacity | 80.7 kWh | 84 kWh (better) |
| Battery chemistry | NMC | NCMA |
| Battery architecture | 400V | 800V (better) |
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | BMW i4eDrive40 M Sport | Hyundai IONIQ 6 NBase |
|---|---|---|
| 0-62 mph | 5.7 sec | 3.2 sec (better) |
| Power | 250 kW | 478 kW (better) |
| Torque | 430 Nm | 770 Nm (better) |
| Drivetrain | RWD | AWD |
See how UK motoring publications rate each car in their road tests.

BMW i4
eDrive40 M Sport
8.8/10
average across 6 reviews

Hyundai IONIQ 6 N
Base
Watch selected video reviews here, or visit each model page for the full collection.
Reviews and videos discuss each model overall; the specifications above apply to your selected trims.
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.
Check a lease quote
Assess the effective monthly cost alongside the list price and expected depreciation.
Tested 2022
Tested 2025
Check the published battery warranty cover for each selected trim.
| Measure | BMW i4eDrive40 M Sport | Hyundai IONIQ 6 NBase |
|---|---|---|
| Battery warranty | 8 years | Not available |
| Battery warranty distance | 160,934 km | Not available |
Get a quote
BMW i4
Hyundai IONIQ 6 N
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BMW i4
Hyundai IONIQ 6 N
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The Hyundai IONIQ 6 N costs £12,395 more than the BMW i4. For that premium it adds 150 kW faster peak rapid charging, 228 kW more power and a 2.5s quicker 0-62mph time. The BMW i4 is not just cheaper - it also offers 64 miles more WLTP range and 99 litres more boot space. On EVcarsguide's combined category scores, the BMW i4 comes out ahead overall.
The BMW i4 is £12,395 cheaper to buy. Running costs are almost identical - about £176 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the BMW i4 comes out roughly £12,475 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.
EVcarsguide estimates a real-world motorway range of about 261 miles for the BMW i4 and 252 miles for the Hyundai IONIQ 6 N - effectively matched, and both well below their WLTP figures because sustained high speed is the hardest case for an EV. A rapid charge to 80% takes around 31 minutes in the BMW i4 and 18 in the Hyundai IONIQ 6 N, so the Hyundai IONIQ 6 N loses less time at each stop.
The BMW i4 is the easier car for tight UK car parks: it is 88 mm narrower than the Hyundai IONIQ 6 N. In a standard 2,400 mm bay that leaves about 548 mm of total clearance for the BMW i4 and about 460 mm of total clearance for the Hyundai IONIQ 6 N. The Hyundai IONIQ 6 N also turns in a 0.5 m tighter circle, which helps with U-turns and multi-storey ramps.
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the BMW i4 and 89% for the Hyundai IONIQ 6 N. That gives the Hyundai IONIQ 6 N a modest edge in retained real-world range. Both use NMC-type cells, so for daily use keep the charge limit near 80% to slow degradation.
Visit the full model pages for owner feedback, expert reviews, used prices and battery-health information.
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Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .