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BMW iX vs Porsche Cayenne
Selected trimxDrive60 M SportChange trim426 mi · 94.8 kWh · £78,405
Selected trimElectricChange trim358 mi · 113 kWh · £83,200
At a glance
In this comparison, BMW iX leads on motorway range and running costs, while the Porsche Cayenne leads on family practicality and charging speed.
Which should you choose?
Choose the BMW iX if...
- you do long motorway journeys - it has the best estimated real-world range at speed
- you want the lowest running costs - from just 1.9p per mile on off-peak electricity
Choose the Porsche Cayenne if...
- you have a family - it has the best combination of boot space, safety, and rear legroom
- you need the fastest charging of these options
How we reached the recommendation
Verdict
Our take
The BMW iX edges ahead overall, but it's close - check which categories matter most to you.
Value
BMW
5.4
Porsche
5.8
Too close to call
Motorway RangeBMW
BMW
8
Porsche
4.9
FamilyPorsche
BMW
7.8
Porsche
9.3
ChargingPorsche
BMW
4.9
Porsche
8.5
Cost Per MileBMW
BMW
7.6
Porsche
0.3
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.
| Measure | BMW iXxDrive60 M Sport | Porsche CayenneElectric |
|---|---|---|
| Price | £78,405 (better) | £83,200 |
| Official range | 426 miles (better) | 358 miles |
| Boot space | 500 L | 781 L (better) |
| 10-80% rapid charge | 35 min | Not available |
| 0-62 mph | 4.6 sec (better) | 4.7 sec |
Size Comparison
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BMW iX
Porsche Cayenne
Length
BMW iX4,965mm-20mm
Porsche Cayenne4,985mm
Width
BMW iX1,970mm-10mm
Porsche Cayenne1,980mm
Height
BMW iX1,695mm
Porsche Cayenne1,674mm-21mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BMW iXxDrive60 M Sport | Porsche CayenneElectric |
|---|---|---|
| Length | 4,965 mm | 4,985 mm |
| Width (mirrors folded) | 1,970 mm (better) | 1,980 mm |
| Width with mirrors out | Not available | 2,199 mm |
| Height | 1,695 mm | 1,674 mm |
| Turning circle | 12.8 m | 12.7 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 430 mm spare (better) | 420 mm spare |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | BMW iXxDrive60 M Sport | Porsche CayenneElectric |
|---|---|---|
| Seats | 5 | 5 |
| ISOFIX child-seat points | Not available | 4 |
| Boot space (seats up) | 500 L | 781 L (better) |
| Boot space (seats down) | 1750 L (better) | 1588 L |
| Frunk | Not available | 90 L |
| Towing capacity (braked) | 2,500 kg | 2,500 kg |
How each stacks up
Percentile ranks against UK EVs of the same body style.
BMW iX
- 426 mile WLTP range, longer than 100% of SUVs we track.
- At 4,965 mm, longer than 90% of SUVs we track.
- Braked towing capacity of 2,500 kg, a stronger tow rating than 95% of SUVs we track.
Porsche Cayenne
- A 90 L frunk, one of 11 of 232 UK EVs in our catalogue with a front boot of 90 L or more.
- 358 mile WLTP range, longer than 80% of SUVs we track.
- At 4,985 mm, longer than 90% of SUVs we track.
Full specifications
| Specification |  BMW iX xDrive60 M Sport |  Porsche Cayenne Electric |
|---|---|---|
| Dimensions | ||
| Length | 4.96m | 4.99m+20mm |
| Width | 1.97m | 1.98m+10mm |
| Width (mirrors) | Not available | 2.20m |
| Height | 1.70m | 1.67m-21mm |
| Wheelbase | 3.00m | 3.02m+23mm |
| Capacity | ||
| Boot (seats up) | 500L | 781L (better) |
| Boot (seats down) | 1750L (better) | 1588L |
| Frunk | Not available | 90L |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 12.8m | 12.7m (better) |
| Kerb Weight | Not available | 2,512kg |
| Towing Capacity | 2,500kg | 2,500kg |
| Electric | ||
| Battery | 94.8kWh | 113kWh (better) |
| Range (WLTP) | 426 mi (better) | 358 mi |
| Max DC Charge | 195kW | 390kW (better) |
| Pricing | ||
| UK MSRP | £78,405 (better) | £83,200 |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2025+ | 2025+ |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | BMW iXxDrive60 M Sport | Porsche CayenneElectric |
|---|---|---|
| Official range (WLTP) | 426 miles (better) | 358 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 355 miles (better) | 234 miles |
| 10-80% rapid charge time | 35 min | Not available |
| Max rapid charge rate | 195 kW | 390 kW (better) |
| Home AC charging | Not available | 11 kW |
| Energy consumption | Not available | 221 Wh/km |
| Usable battery capacity | 94.8 kWh | 100 kWh (better) |
| Battery chemistry | NMC | NMC |
| Battery architecture | Not available | 800V |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | BMW iXxDrive60 M Sport | Porsche CayenneElectric |
|---|---|---|
| 0-62 mph | 4.6 sec (better) | 4.7 sec |
| Power | 400 kW (better) | 325 kW |
| Torque | 765 Nm | 835 Nm (better) |
| Drivetrain | AWD | AWD |
What the critics say
See how UK motoring publications rate each car in their road tests.
BMW iX
xDrive60 M Sport
Porsche Cayenne
Electric
Watch the reviews
Watch selected video reviews here, or visit each model page for the full collection.
BMW iX
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.
Check a lease quote
Assess the effective monthly cost alongside the list price and expected depreciation.
Safety & ownership confidence
Euro NCAP - BMW iX xDrive60 M Sport
Tested 2025
Adult Occupant91%
Child Occupant87%
Vulnerable Road Users73%
Safety Assist81%
Full result on euroncap.com (opens in new tab)
Euro NCAP - Porsche Cayenne Electric
Tested 2025
Adult Occupant91%
Child Occupant89%
Vulnerable Road Users81%
Safety Assist79%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | BMW iXxDrive60 M Sport | Porsche CayenneElectric |
|---|---|---|
| Battery warranty | 8 years | Not available |
| Battery warranty distance | 160,934 km | Not available |
What owners say
Aggregated from UK owner forums and communities - the things you only learn after living with the car.
BMW iX
xDrive60 M Sport
Owners love
- Strong performance across the range, with M60 variant achieving 3.6-second 0-60 acceleration and newer models offering up to 435-mile range
- Luxurious, comfortable driving experience with excellent refinement, quality interior design, and air suspension option
- Comprehensive standard specifications including adaptive cruise control, 360 camera, and advanced driving assistants that work intuitively
Watch out for
- Controversial and polarising front grille design that remains a significant barrier to appeal despite updates
- Limited boot space for the vehicle's overall size
- Non-air suspension models ride very firm on UK roads; air suspension is effectively essential for comfort
Owner tips
- Prioritize air suspension and rear-wheel steering as must-have options for driving comfort, handling, and parking ease
- Consider the iX60 or iX50 over smaller battery variants if doing significant mileage—better value proposition with improved efficiency and range
Porsche Cayenne
Electric
Owners love
- Exceptional steering feel and chassis feedback rival the Taycan, delivering genuine driver connection despite the 2.6-tonne weight
- Impressive performance with 1,156hp and 2.5-second 0-62mph acceleration, plus 383-mile range that matches the efficiency of less powerful variants
- Active air suspension provides excellent body control and stability, enhancing both comfort and performance capabilities
Watch out for
- Styling is divisive, with owners describing the front as 'frog-like' and the rear as generic or lacking Porsche identity compared to petrol models
- High price of £130,990 represents a £50,000 premium over the standard Electric for performance gains that may feel excessive in daily use
- Synthetic V8 rumble sound is criticized as artificial and unconvincing despite technical competence
Owner tips
- Test Dark Orange Metallic paint in person, as color selection dramatically transforms perceived design appeal versus standard gray or black
- Consider the standard Cayenne Electric if maximum power isn't essential, as it achieves nearly identical range for significantly less cost
Buying options
Get a quote
BMW iX
Used on AutoTraderLease deals
Porsche Cayenne
Used on AutoTraderLease deals
Live used listings
Active inventory from independent UK dealers.
BMW iX
- £70,2622025Car360View
Porsche Cayenne
No active listings.
Frequently asked questions
Is the Porsche Cayenne worth the extra £4,795 over the BMW iX?
The Porsche Cayenne costs £4,795 more than the BMW iX. For that premium it adds 195 kW faster peak rapid charging and 281 litres more boot space. The BMW iX is not just cheaper - it also offers 68 miles more WLTP range and 75 kW more power. On EVcarsguide's combined category scores, the BMW iX comes out ahead overall.
Which is cheaper to own over 5 years, the BMW iX or the Porsche Cayenne?
The BMW iX is £4,795 cheaper to buy. The BMW iX is cheaper to charge, roughly £152 a year versus £240 for the Porsche Cayenne, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the BMW iX comes out roughly £5,235 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 iX and Porsche Cayenne like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 355 miles for the BMW iX and 234 miles for the Porsche Cayenne - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The BMW iX goes roughly 121 miles further between charging stops.
Which is easier to park and drive in town, the BMW iX or the Porsche Cayenne?
The two are within 10 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 430 mm of total clearance for the BMW iX and about 420 mm of total clearance for the Porsche Cayenne.
Which battery will hold up better as a used buy, the BMW iX or the Porsche Cayenne?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the BMW iX and 84% for the Porsche Cayenne. 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.
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.
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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 iX and Porsche Cayenne rank among the best family EVsWhere the BMW iX and Porsche Cayenne rank among the best electric SUVsWhere the BMW iX and Porsche Cayenne rank among long-range EVsWhere the BMW iX and Porsche Cayenne rank among the best motorway EVsWhere the BMW iX and Porsche Cayenne rank among the best city EVsWhere the BMW iX and Porsche Cayenne rank among the cheapest EVs to run
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.
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .