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BMW i4 vs BMW iX2
Selected trimeDrive20 M SportChange trim318 mi · 64.8 kWh · £41,815
At a glance
In this comparison, BMW i4 stays competitive across the board, while the BMW iX2 leads on motorway range, family practicality and running costs.
Which should you choose?
Choose the BMW iX2 if...
- you do long motorway journeys - it has the best estimated real-world range at speed
- you need the most family-friendly option with good safety and space
- you want the lowest running costs - from just 1.7p per mile on off-peak electricity
- you need the best car for city driving and tight parking
How we reached the recommendation
Verdict
Our take
The BMW iX2 leads in the most categories, but each car here has its strengths.
Value
i4
5.9
iX2
5.9
Too close to call
Motorway RangeiX2
i4
4.1
iX2
5.9
FamilyiX2
i4
6.4
iX2
7.7
Charging
i4
3.7
iX2
4.1
Too close to call
Cost Per MileiX2
i4
4.1
iX2
9.1
City DrivingiX2
i4
3.2
iX2
4.4
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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BMW i4
BMW iX2
Length
BMW i44,783mm
BMW iX24,554mm-229mm
Width
BMW i41,852mm
BMW iX21,845mm-7mm
Height
BMW i41,448mm-112mm
BMW iX21,560mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BMW i4eDrive40 M Sport | BMW iX2eDrive20 M Sport |
|---|---|---|
| Length | 4,783 mm | 4,554 mm |
| Width (mirrors folded) | 1,852 mm | 1,845 mm (better) |
| Width with mirrors out | 2,073 mm | Not available |
| Height | 1,448 mm | 1,560 mm |
| Turning circle | 12.5 m | 11.9 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 548 mm spare | 555 mm spare (better) |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
Full specifications
| Specification |  BMW i4 eDrive40 M Sport |  BMW iX2 eDrive20 M Sport |
|---|---|---|
| Dimensions | ||
| Length | 4.78m | 4.55m-229mm |
| Width | 1.85m | 1.84m-7mm |
| Width (mirrors) | 2.07m | Not available |
| Height | 1.45m | 1.56m+112mm |
| Wheelbase | 2.86m | 2.69m-164mm |
| Ground Clearance | 125mm | Not available |
| Capacity | ||
| Boot (seats up) | 470L | 525L (better) |
| Boot (seats down) | 1290L | 1400L (better) |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 12.5m | 11.9m (better) |
| Kerb Weight | 2,125kg | 1,960kg (better) |
| Towing Capacity | 1,600kg | Not available |
| Electric | ||
| Battery | 83.9kWh (better) | 64.8kWh |
| Range (WLTP) | 367 mi (better) | 318 mi |
| Max DC Charge | 200kW (better) | 130kW |
| Pricing | ||
| UK MSRP | £53,405 | £41,815 (better) |
| Price after EV grant | £53,405 (not eligible) | £38,065 (-£3,750) |
| Details | ||
| Body Style | Saloon | SUV |
| Available | 2021–2026 | 2024+ |
* 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.
* BMW iX2: 11 kW AC is standard; 22 kW AC was an option.
* BMW iX2: Current figure, after a March 2026 efficiency update. Earlier cars: eDrive20 272-283 miles WLTP, xDrive30 259-267 miles WLTP.
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | BMW i4eDrive40 M Sport | BMW iX2eDrive20 M Sport |
|---|---|---|
| Official range (WLTP) | 367 miles (better) | 318 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 261 miles | 265 miles (better) |
| 10-80% rapid charge time | 31 min | 29 min (better) |
| Max rapid charge rate | 200 kW (better) | 130 kW |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | 160 Wh/km | Not available |
| Usable battery capacity | 80.7 kWh (better) | 64.8 kWh |
| Battery chemistry | NMC | NMC |
| Battery architecture | 400V | 400V |
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.
BMW i4
eDrive40 M Sport
8.8/10
average across 6 reviews
- Electrifying.com10/10
- Auto Express4.5/5
- DrivingElectric4.5/5
BMW iX2
eDrive20 M Sport
Watch the reviews
Watch selected video reviews here, or visit each model page for the full collection.
BMW i4
All 3 videos
Reviews and videos discuss each model overall; the specifications above apply to your selected trims.
Prices & deals
New and used prices
Current pricing and recent used-market behaviour.
Used prices are indicative figures gathered from independent UK dealer listings and change frequently.
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 - BMW i4 eDrive40 M Sport
Tested 2022
Adult Occupant87%
Child Occupant87%
Vulnerable Road Users71%
Safety Assist64%
Full result on euroncap.com (opens in new tab)
Euro NCAP - BMW iX2 eDrive20 M Sport
Tested 2022
Adult Occupant85%
Child Occupant88%
Vulnerable Road Users76%
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
BMW i4
Used on AutoTraderLease deals
BMW iX2
Used on AutoTraderLease deals
Live used listings
Active inventory from independent UK dealers.
BMW i4
- £28,9502023Car360View
- £25,6992024Car360View
- £24,5582023Car360View
BMW iX2
No active listings.
Frequently asked questions
Is the BMW i4 worth the extra £11,590 over the BMW iX2?
The BMW i4 costs £11,590 more than the BMW iX2. For that premium it adds 48 miles more WLTP range, 70 kW faster peak rapid charging and 100 kW more power. The BMW iX2 is not just cheaper - it also offers 55 litres more boot space. On EVcarsguide's combined category scores, the BMW iX2 comes out ahead overall.
Which is cheaper to own over 5 years, the BMW i4 or the BMW iX2?
The BMW iX2 is £11,590 cheaper to buy. The BMW iX2 is cheaper to charge, roughly £136 a year versus £176 for the BMW i4, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the BMW iX2 comes out roughly £11,790 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.
What are the BMW i4 and BMW iX2 like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 261 miles for the BMW i4 and 265 miles for the BMW iX2 - effectively matched, and both well below their WLTP figures because sustained high speed is the hardest case for an EV. Both rapid-charge to 80% in a similar time, around 29-31 minutes.
Which is easier to park and drive in town, the BMW i4 or the BMW iX2?
The two are within 7 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 555 mm of total clearance for the BMW iX2 and about 548 mm of total clearance for the BMW i4. The BMW iX2 also turns in a 0.6 m tighter circle, which helps with U-turns and multi-storey ramps.
Which battery will hold up better as a used buy, the BMW i4 or the BMW iX2?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the BMW i4 and 84% for the BMW iX2. That is close enough that capacity loss should not decide between them. Both use NMC-type cells, so for daily use keep the charge limit near 80% to slow degradation. 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 BMW i4 comparisons
More BMW iX2 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 BMW i4 and BMW iX2 rank among the best family EVsWhere the BMW i4 and BMW iX2 rank among long-range EVsWhere the BMW i4 and BMW iX2 rank among the best motorway EVsWhere the BMW i4 and BMW iX2 rank among the best city EVsWhere the BMW i4 and BMW iX2 rank among the cheapest EVs to runWhere the BMW i4 and BMW iX2 rank among EVs with the biggest boots
If neither is quite right
Explore other verified electric cars that may better suit the priorities this pair does not meet.
Further reading
Explore buying and ownership guides to help you choose between these electric cars.
GuideBuying a Used BMW i4 (2021 on): eDrive35, eDrive40 or M50, Battery Recalls, Range & What to Check
A used BMW i4 buyer’s guide: eDrive35, eDrive40, M50 and M60 compared, the battery recalls on early cars, warranty left, real-world and winter range, rear space, tyres, what to pay and a printable checklist.
GuideBuying a Used BMW iX2 (2024 on): eDrive20 vs xDrive30, the Grant Price Cut & What to Pay
A used BMW iX2 buyer’s guide: eDrive20 vs xDrive30, the 2026 range update, the July 2026 price cut and £3,750 grant that make a new eDrive20 cheaper than many used ones, recalls, warranty, what owners report, what to pay and a printable checklist.
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .