In this comparison, BMW i4 leads on city driving, while the BMW i5 leads on motorway range, family practicality and charging speed.
Choose the BMW i4 if...
Choose the BMW i5 if...
Our take
The BMW i5 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.
Compare the key specifications for your selected trims.
Size Comparison
Length
Width
Height
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BMW i4eDrive40 M Sport | BMW i5eDrive40 M Sport |
|---|---|---|
| Length | 4,783 mm | 5,060 mm |
| Width (mirrors folded) | 1,852 mm (better) | 1,900 mm |
| Width with mirrors out | 2,073 mm | Not available |
| Height | 1,448 mm | 1,515 mm |
| Turning circle | 12.5 m | 12.3 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 548 mm spare (better) | 500 mm spare |
Compare seating, child-seat mounting points, boot space and towing capacity.
| Specification | BMW i4 eDrive40 M Sport | BMW i5 eDrive40 M Sport |
|---|---|---|
| Dimensions | ||
| Length | 4.78m | 5.06m+277mm |
| Width | 1.85m | 1.90m+48mm |
| Width (mirrors) | 2.07m | Not available |
| Height | 1.45m | 1.51m+67mm |
| Wheelbase | 2.86m | 3.00m+139mm |
| Ground Clearance | 125mm | Not available |
| Capacity | ||
| Boot (seats up) | 470L | 490L (better) |
| Boot (seats down) | 1290L | Not available |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 12.5m | 12.3m (better) |
| Kerb Weight | 2,125kg (better) | 2,195kg |
| Towing Capacity | 1,600kg | Not available |
| Electric | ||
| Battery | 83.9kWh | 83.9kWh |
| Range (WLTP) | 367 mi (better) | 357 mi |
| Max DC Charge | 200kW | 205kW (better) |
| Pricing | ||
| UK MSRP | £53,405 (better) | £67,795 |
| Details | ||
| Body Style | Saloon | Saloon |
| Available | 2021–2026 | 2023+ |
* 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 | BMW i5eDrive40 M Sport |
|---|---|---|
| Official range (WLTP) | 367 miles (better) | 357 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 261 miles | 297 miles (better) |
| 10-80% rapid charge time | 31 min | 30 min (better) |
| Max rapid charge rate | 200 kW | 205 kW (better) |
| Home AC charging | 11 kW | 22 kW (better) |
| Energy consumption | 160 Wh/km | Not available |
| Usable battery capacity | 80.7 kWh | 81.2 kWh (better) |
| Battery chemistry | NMC | NMC |
| Battery architecture | 400V | 400V |
Compare acceleration, power and drivetrain specifications for the selected trims.
See how UK motoring publications rate each car in their road tests.

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

BMW i5
eDrive40 M Sport
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.
Tested 2022
Tested 2023
Check the published battery warranty cover for each selected trim.
Aggregated from UK owner forums and communities - the things you only learn after living with the car.
Shared watch-outs for both cars
Owners of every car here flag real-world range. Worth checking on a test drive whichever you choose.

BMW i4
eDrive40 M Sport

BMW i5
eDrive40 M Sport
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The BMW i5 costs £14,390 more than the BMW i4. On the headline specs that premium buys little measurable advantage - the two are closely matched on range, charging and space. On EVcarsguide's combined category scores, the BMW i5 comes out ahead overall.
The BMW i4 is £14,390 cheaper to buy. Running costs are almost identical - about £160 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 £14,310 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 297 miles for the BMW i5 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The BMW i5 goes roughly 36 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 30-31 minutes.
The BMW i4 is the easier car for tight UK car parks: it is 48 mm narrower than the BMW i5. In a standard 2,400 mm bay that leaves about 548 mm of total clearance for the BMW i4 and about 500 mm of total clearance for the BMW i5.
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the BMW i4 and 84% for the BMW i5. 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.
Visit the full model pages for owner feedback, expert reviews, used prices and battery-health information.
Compare similarly sized and priced electric cars before finalising your shortlist.
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EVcarsguide scores every verified EV on price, range, family use and running costs. Here is where this pair appears.
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GuideA 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.
GuideA used BMW i5 buyer’s guide: eDrive40 or M60, saloon or Touring, the option packs to check, the braking-system recall, battery warranty left, real-world range, what to pay and a printable checklist.
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .