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BMW iX (2021-2025) vs Porsche Taycan (2020-2024)
Selected trimxDrive40 · 2021-25Change trim257 mi · 76.6 kWh · £69,905
Selected trim79.2kWh Performance Battery · 2020-24Change trim253 mi · 79.2 kWh · £83,367
At a glance
In this comparison, BMW iX leads on family practicality, while the Porsche Taycan leads on motorway range and charging speed.
Which should you choose?
Choose the BMW iX (2021-2025) if...
- you need the most family-friendly option with good safety and space
Choose the Porsche Taycan (2020-2024) if...
- you do long motorway journeys - it has the best estimated real-world range at speed
- you need the fastest charging of these options
How we reached the recommendation
Verdict
Our take
The Porsche Taycan leads in the most categories, but each car here has its strengths.
Value
BMW
4.1
Porsche
4.4
Too close to call
Motorway RangePorsche
BMW
3
Porsche
4.1
FamilyBMW
BMW
7.8
Porsche
6.6
ChargingPorsche
BMW
3.7
Porsche
6.5
What each car does better
See the specification differences behind the verdict, with supporting figures for each advantage.
Porsche Taycan
79.2kWh Performance Battery (2020-24)
- 75 kW faster rapid charging
- 17 min quicker 10-80% rapid charge
- 150 kW more power
- 0.9s quicker 0-62 mph
- 1.1 m tighter turning circle
Key specifications
Compare the key specifications for your selected trims.
| Measure | BMW iXxDrive40 | Porsche Taycan79.2kWh Performance Battery (2020-24) |
|---|---|---|
| Price | £69,905 (better) | £83,367 |
| Official range | 257 miles (better) | 253 miles |
| Boot space | 500 L (better) | 407 L |
| 10-80% rapid charge | 35 min | 18 min (better) |
| 0-62 mph | 4.6 sec | 3.7 sec (better) |
Size Comparison
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BMW iX
Porsche Taycan
Length
BMW iX4,965mm
Porsche Taycan4,963mm-2mm
Width
BMW iX1,970mm
Porsche Taycan1,966mm-4mm
Height
BMW iX1,695mm
Porsche Taycan1,379mm-316mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | BMW iXxDrive40 | Porsche Taycan79.2kWh Performance Battery (2020-24) |
|---|---|---|
| Length | 4,965 mm | 4,963 mm |
| Width (mirrors folded) | 1,970 mm | 1,966 mm (better) |
| Width with mirrors out | Not available | 2,144 mm |
| Height | 1,695 mm | 1,379 mm |
| Turning circle | 12.8 m | 11.7 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 430 mm spare | 434 mm spare (better) |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | BMW iXxDrive40 | Porsche Taycan79.2kWh Performance Battery (2020-24) |
|---|---|---|
| Seats | 5 (better) | 4 |
| Boot space (seats up) | 500 L (better) | 407 L |
| Boot space (seats down) | 1750 L | Not available |
| Frunk | Not available | 84 L |
| Towing capacity (braked) | 2,500 kg | Not available |
How each stacks up
Percentile ranks against UK EVs of the same body style.
BMW iX
- At 4,965 mm, longer than 90% of SUVs we track.
- Braked towing capacity of 2,500 kg, a stronger tow rating than 90% of SUVs we track.
- 3,000 mm wheelbase, longer than 90% of SUVs we track.
Porsche Taycan
Not enough peers to make confident percentile claims.
Full specifications
| Specification |  BMW iX xDrive40 |  Porsche Taycan 79.2kWh Performance Battery (2020-24) |
|---|---|---|
| Dimensions | ||
| Length | 4.96m | 4.96m-2mm |
| Width | 1.97m | 1.97m-4mm |
| Width (mirrors) | Not available | 2.14m |
| Height | 1.70m | 1.38m-316mm |
| Wheelbase | 3.00m | 2.90m-100mm |
| Capacity | ||
| Boot (seats up) | 500L (better) | 407L |
| Boot (seats down) | 1750L | Not available |
| Frunk | Not available | 84L |
| Seats | 5 (better) | 4 |
| Practicality | ||
| Turning Circle | 12.8m | 11.7m (better) |
| Kerb Weight | Not available | 2,170kg |
| Towing Capacity | 2,500kg | Not available |
| Electric | ||
| Battery | 76.6kWh | 79.2kWh (better) |
| Range (WLTP) | 257 mi (better) | 253 mi |
| Max DC Charge | 150kW | 225kW (better) |
| Pricing | ||
| UK MSRP | £69,905 (better) | £83,367 |
| Details | ||
| Body Style | SUV | Saloon |
| Available | 2021–2025 | 2020–2024 |
* Porsche Taycan: Figures are for the Taycan 4S. The same battery was used across the range (RWD, 4, 4S, GTS, Turbo, Turbo S) with different power and range.
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | BMW iXxDrive40 | Porsche Taycan79.2kWh Performance Battery (2020-24) |
|---|---|---|
| Official range (WLTP) | 257 miles (better) | 253 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 214 miles (better) | 211 miles |
| 10-80% rapid charge time | 35 min | 18 min (better) |
| Max rapid charge rate | 150 kW | 225 kW (better) |
| Home AC charging | 11 kW | 11 kW |
| Usable battery capacity | 71 kWh | 79.2 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 iXxDrive40 | Porsche Taycan79.2kWh Performance Battery (2020-24) |
|---|---|---|
| 0-62 mph | 4.6 sec | 3.7 sec (better) |
| Power | 240 kW | 390 kW (better) |
| Torque | 765 Nm (better) | 695 Nm |
| Drivetrain | AWD | AWD |
Prices & deals
New and used prices
Current pricing and recent used-market behaviour.
| Measure | BMW iXxDrive40 | Porsche Taycan79.2kWh Performance Battery (2020-24) |
|---|---|---|
| Used market price from | £26,350 | £34,950 |
| Average used price | £28,990 | £43,990 |
| Active used listings trackedIndependent UK dealer listings seen in the last 90 days. | 15 listings (better) | 8 listings |
| Recent used-price trend | Up 20% over ~6 months | Up 6.3% over ~6 months |
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.
Check a lease quote
Assess the effective monthly cost alongside the list price and expected depreciation.
Safety & ownership confidence
Euro NCAP - BMW iX xDrive40
Tested 2025
Adult Occupant91%
Child Occupant87%
Vulnerable Road Users73%
Safety Assist81%
Full result on euroncap.com (opens in new tab)
Euro NCAP - Porsche Taycan 79.2kWh Performance Battery (2020-24)
Tested 2025
Adult Occupant85%
Child Occupant83%
Vulnerable Road Users70%
Safety Assist73%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | BMW iXxDrive40 | Porsche Taycan79.2kWh Performance Battery (2020-24) |
|---|---|---|
| Battery warranty | 8 years | 8 years |
| Battery warranty distance | 160,934 km (better) | 160,000 km |
What owners say
Aggregated from UK owner forums and communities - the things you only learn after living with the car.
BMW iX
xDrive40
Owners love
- Owners praise the comfort and refinement, especially with air suspension, and the roomy cabin.
- Long-term owners report few faults and little battery wear, with one reporting 3% after two and a half years.
- The xDrive50 is reported to meet or beat its official range in summer, and rapid charging is fast and dependable.
Watch out for
- The xDrive40's smaller battery is the main complaint: owners report about 170 to 230 miles in real use, less in winter.
- Several owners report insurers declining to renew iX policies or quoting much higher premiums.
- Owners report fast tyre wear on some cars, and the turning circle is large without rear-wheel steering.
Owner tips
- Choose an xDrive50 if you drive long distances: it has far more range than the xDrive40.
- Get insurance quotes, including from specialist brokers, before you buy.
Porsche Taycan
79.2kWh Performance Battery (2020-24)
Owners love
- Owners rave about the driving: superb handling, huge performance and long-distance comfort, especially with air suspension and rear-axle steering.
- The cabin is well built, with good ergonomics and a head-up display, and the 800V system makes rapid-charging stops short.
- Real-world range is around 240-250 miles in summer on the 93 kWh battery, sometimes beating expectations.
Watch out for
- Depreciation has been very steep from new.
- Winter range drops to about 150-200 miles on long journeys.
- Owners report a range of faults: heater elements, air suspension, charge-port covers, screens and the infotainment, some needing several dealer visits.
Owner tips
- Choose the 93 kWh Performance Battery Plus for more range.
- Buy with warranty remaining, and consider an extended warranty for the time you keep the car.
Buying options
Get a quote
BMW iX
Used on AutoTraderLease deals
Porsche Taycan
Used on AutoTraderLease deals
Live used listings
Active inventory from independent UK dealers.
BMW iX
- £31,6302021Car360View
- £26,3502022Anchor CarsView
Porsche Taycan
- £43,6992023Car360View
- £43,6992023Car360View
Frequently asked questions
Is the Porsche Taycan worth the extra £13,462 over the BMW iX?
The Porsche Taycan costs £13,462 more than the BMW iX. For that premium it adds 75 kW faster peak rapid charging, 150 kW more power and a 0.9s quicker 0-62mph time. The BMW iX is not just cheaper - it also offers 93 litres more boot space and 1 more seat (5 versus 4). On EVcarsguide's combined category scores, the Porsche Taycan comes out ahead overall.
Which is cheaper to own over 5 years, the BMW iX or the Porsche Taycan?
The BMW iX is £13,462 cheaper to buy. Running costs are almost identical - about £200 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the BMW iX comes out roughly £13,542 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 Taycan like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 214 miles for the BMW iX and 211 miles for the Porsche Taycan - 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 35 minutes in the BMW iX and 18 in the Porsche Taycan, so the Porsche Taycan loses less time at each stop.
Which is easier to park and drive in town, the BMW iX or the Porsche Taycan?
The two are within 4 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 434 mm of total clearance for the Porsche Taycan and about 430 mm of total clearance for the BMW iX. The Porsche Taycan also turns in a 1.1 m tighter circle, which helps with U-turns and multi-storey ramps.
Which battery will hold up better as a used buy, the BMW iX or the Porsche Taycan?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the BMW iX and 84% for the Porsche Taycan. 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.
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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 Taycan rank among the best motorway EVsWhere the BMW iX and Porsche Taycan rank among the best city EVsWhere the BMW iX and Porsche Taycan rank among the cheapest EVs to runWhere the BMW iX and Porsche Taycan rank among EVs with the biggest bootsWhere the BMW iX and Porsche Taycan rank among Best Used Electric Cars Under £10,000 (UK)Where the BMW iX and Porsche Taycan rank among Best Used Electric Cars Under £15,000 (UK)
If neither is quite right
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Further reading
Explore buying and ownership guides to help you choose between these electric cars.
GuideBuying a Used BMW iX (2021 on): xDrive40 vs xDrive50, Recalls, Insurance & What to Pay
A used BMW iX buyer’s guide: xDrive40, xDrive50 and M60 against the 2025 xDrive45 and xDrive60, the range gap, battery and airbag recalls, insurance, battery warranty left, what owners report, what to pay and a printable checklist.
GuideBuying a Used Porsche Taycan (2020 on): Which Battery, the Recalls, Warranty & What to Pay
A used Porsche Taycan buyer’s guide: Performance Battery vs Performance Battery Plus, RWD, 4S, GTS, Turbo and Turbo S, the 2024 facelift, the battery and brake-hose recalls, battery warranty left, real-world range, 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 .