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AION V vs Toyota bZ4X
Selected trimPremium317 mi · 75 kWh · £36,450
Selected trimIcon FWD 57.7kWhChange trim276 mi · 57.7 kWh · £39,995
At a glance
In this comparison, AION V leads on value for money, motorway range and charging speed, while the Toyota bZ4X leads on running costs.
Which should you choose?
Choose the AION V if...
- you want the most for your money - best overall spec per pound
- you do long motorway journeys - it has the best estimated real-world range at speed
- you need the fastest charging of these options
- you need the best car for city driving and tight parking
Choose the Toyota bZ4X if...
- you want the lowest running costs - from just 1.8p per mile on off-peak electricity
How we reached the recommendation
Verdict
Our take
The AION V leads in the most categories, but each car here has its strengths.
ValueAION
AION
6.7
Toyota
5.5
Motorway RangeAION
AION
6.2
Toyota
4.9
Family
AION
6.6
Toyota
6.9
Too close to call
ChargingAION
AION
6.4
Toyota
4.4
Cost Per MileToyota
AION
6.2
Toyota
8.8
City DrivingAION
AION
4.8
Toyota
4.2
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 | AION VPremium | Toyota bZ4XIcon FWD 57.7kWh |
|---|---|---|
| Price | £36,450 (better) | £39,995 |
| Official range | 317 miles (better) | 276 miles |
| Boot space | 427 L | 452 L (better) |
| 10-80% rapid charge | 25 min (better) | 30 min |
| 0-62 mph | 7.7 sec (better) | 8.6 sec |
Size Comparison
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AION V
Toyota bZ4X
Length
AION V4,605mm-85mm
Toyota bZ4X4,690mm
Width
AION V1,854mm-6mm
Toyota bZ4X1,860mm
Height
AION V1,660mm
Toyota bZ4X1,650mm-10mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | AION VPremium | Toyota bZ4XIcon FWD 57.7kWh |
|---|---|---|
| Length | 4,605 mm | 4,690 mm |
| Width (mirrors folded) | 1,854 mm (better) | 1,860 mm |
| Height | 1,660 mm | 1,650 mm |
| Turning circle | 11.2 m | 11.2 m |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 546 mm spare (better) | 540 mm spare |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | AION VPremium | Toyota bZ4XIcon FWD 57.7kWh |
|---|---|---|
| Seats | 5 | 5 |
| ISOFIX child-seat points | 4 | Not available |
| Boot space (seats up) | 427 L | 452 L (better) |
| Towing capacity (braked) | Not available | 750 kg |
Full specifications
| Specification |  AION V Premium |  Toyota bZ4X Icon FWD 57.7kWh |
|---|---|---|
| Dimensions | ||
| Length | 4.61m | 4.69m+85mm |
| Width | 1.85m | 1.86m+6mm |
| Height | 1.66m | 1.65m-10mm |
| Wheelbase | 2.77m | 2.85m+75mm |
| Ground Clearance | Not available | 177mm |
| Capacity | ||
| Boot (seats up) | 427L | 452L (better) |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 11.2m | 11.2m |
| Kerb Weight | 1,920kg | 1,870kg (better) |
| Towing Capacity | Not available | 750kg |
| Electric | ||
| Battery | 75kWh (better) | 57.7kWh |
| Range (WLTP) | 317 mi (better) | 276 mi |
| Max DC Charge | 180kW (better) | 150kW |
| Pricing | ||
| UK MSRP | £36,450 (better) | £39,995 |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2026+ | 2026+ |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | AION VPremium | Toyota bZ4XIcon FWD 57.7kWh |
|---|---|---|
| Official range (WLTP) | 317 miles (better) | 276 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 264 miles (better) | 230 miles |
| 10-80% rapid charge time | 25 min (better) | 30 min |
| Max rapid charge rate | 180 kW (better) | 150 kW |
| Home AC charging | 11 kW | 11 kW |
| Usable battery capacity | 75 kWh (better) | 54 kWh |
| Battery chemistry | LFP | NMC |
| Battery architecture | 400V | Not available |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | AION VPremium | Toyota bZ4XIcon FWD 57.7kWh |
|---|---|---|
| 0-62 mph | 7.7 sec (better) | 8.6 sec |
| Power | 147 kW (better) | 125 kW |
| Torque | 240 Nm | 269 Nm (better) |
| Drivetrain | FWD | FWD |
What the critics say
See how UK motoring publications rate each car in their road tests. One car has more review coverage than the other - we show that rather than guessing.
AION V
Premium
No critic reviews gathered yet for this car.
Toyota bZ4X
Icon FWD 57.7kWh
Watch the reviews
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.
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 - AION V Premium
Tested 2025
Adult Occupant88%
Child Occupant85%
Vulnerable Road Users79%
Safety Assist78%
Euro NCAP - Toyota bZ4X Icon FWD 57.7kWh
Tested 2025
Adult Occupant88%
Child Occupant85%
Vulnerable Road Users80%
Safety Assist79%
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | AION VPremium | Toyota bZ4XIcon FWD 57.7kWh |
|---|---|---|
| Battery warranty | Not available | 8 years |
| Battery warranty distance | Not available | 160,934 km |
Buying options
Get a quote
AION V
Used on AutoTraderLease deals
Toyota bZ4X
Used on AutoTraderLease deals
Frequently asked questions
Is the Toyota bZ4X worth the extra £3,545 over the AION V?
The Toyota bZ4X costs £3,545 more than the AION V. On the headline specs that premium buys little measurable advantage - the two are closely matched on range, charging and space. The AION V is not just cheaper - it also offers 41 miles more WLTP range, 30 kW faster peak rapid charging and a 0.9s quicker 0-62mph time. On EVcarsguide's combined category scores, the AION V comes out ahead overall.
Which is cheaper to own over 5 years, the AION V or the Toyota bZ4X?
The AION V is £3,545 cheaper to buy. Running costs are almost identical - about £144 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the AION V comes out roughly £3,465 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.
What are the AION V and Toyota bZ4X like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 264 miles for the AION V and 230 miles for the Toyota bZ4X - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The AION V goes roughly 34 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 25-30 minutes.
Which is easier to park and drive in town, the AION V or the Toyota bZ4X?
The two are within 6 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 546 mm of total clearance for the AION V and about 540 mm of total clearance for the Toyota bZ4X.
Which battery will hold up better as a used buy, the AION V or the Toyota bZ4X?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 90% battery health for the AION V and 84% for the Toyota bZ4X. That gives the AION V a modest edge in retained real-world range. The AION V's LFP-type pack tolerates daily 100% charging, while the Toyota bZ4X's NMC-type pack lasts longest kept to about 80% for everyday use.
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 AION V comparisons
More Toyota bZ4X 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 AION V and Toyota bZ4X rank among the best family EVsWhere the AION V and Toyota bZ4X rank among EVs under £40,000Where the AION V and Toyota bZ4X rank among the best electric SUVsWhere the AION V and Toyota bZ4X rank among the best motorway EVsWhere the AION V and Toyota bZ4X rank among the best city EVsWhere the AION V and Toyota bZ4X 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 .