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firefly vs MINI Aceman
Selected trimStandard205 mi · 41 kWh · Not available
Selected trimEChange trim191 mi · 38.5 kWh · £28,310
At a glance
In this comparison, firefly firefly leads on motorway range, family practicality and charging speed, while the MINI Aceman leads on value for money.
Which should you choose?
Choose the firefly 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 need the fastest charging of these options
- you drive in the city - it's compact with an excellent turning circle
Choose the MINI Aceman if...
- you want the most for your money - best overall spec per pound
How we reached the recommendation
Verdict
Our take
The firefly firefly leads in the most categories, but each car here has its strengths.
ValueMINI
firefly
0
MINI
5.7
Motorway Rangefirefly
firefly
4.9
MINI
3.9
Familyfirefly
firefly
7.6
MINI
4.7
Chargingfirefly
firefly
6.6
MINI
2.9
Cost Per Mile
firefly
9.4
MINI
9.3
Too close to call
City Drivingfirefly
firefly
9.2
MINI
8.1
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 | fireflyBase | MINI AcemanE |
|---|---|---|
| Price | Not available | £28,310 |
| Official range | 205 miles (better) | 191 miles |
| Boot space | 348 L (better) | 300 L |
| 10-80% rapid charge | 25 min (better) | 29 min |
| 0-62 mph | 8.1 sec (better) | 12.7 sec |
Size Comparison
View:
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firefly
MINI Aceman
Length
firefly4,003mm-76mm
MINI Aceman4,079mm
Width
firefly1,781mm
MINI Aceman1,754mm-27mm
Height
firefly1,557mm
MINI Aceman1,514mm-43mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | fireflyBase | MINI AcemanE |
|---|---|---|
| Length | 4,003 mm | 4,079 mm |
| Width (mirrors folded) | 1,781 mm | 1,754 mm (better) |
| Width with mirrors out | Not available | 1,984 mm |
| Height | 1,557 mm | 1,514 mm |
| Turning circle | 9.4 m (better) | 10.8 m |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 619 mm spare | 646 mm spare (better) |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | fireflyBase | MINI AcemanE |
|---|---|---|
| Seats | 5 | 5 |
| Rear legroom | Not available | 822 mm |
| ISOFIX child-seat points | 3 | Not available |
| Boot space (seats up) | 348 L (better) | 300 L |
| Boot space (seats down) | 1253 L (better) | 1005 L |
| Frunk | 65 L (better) | 0 L |
| Towing capacity (braked) | Not available | 750 kg |
How each stacks up
Percentile ranks against UK EVs of the same body style.
firefly
- A 65 L frunk, one of 22 of 232 UK EVs in our catalogue with a front boot of 65 L or more.
- One of 33 of 232 UK EVs in our catalogue with V2L (vehicle-to-load) support.
- 9.4 m turning circle, tighter than 90% of hatchback EVs in our database.
MINI Aceman
Not enough peers to make confident percentile claims.
Full specifications
| Specification |  firefly Base |  MINI Aceman E |
|---|---|---|
| Dimensions | ||
| Length | 4.00m | 4.08m+76mm |
| Width | 1.78m | 1.75m-27mm |
| Width (mirrors) | Not available | 1.98m |
| Height | 1.56m | 1.51m-43mm |
| Wheelbase | 2.62m | 2.61m-9mm |
| Capacity | ||
| Boot (seats up) | 348L (better) | 300L |
| Boot (seats down) | 1253L (better) | 1005L |
| Frunk | 65L (better) | Not available |
| Seats | 5 | 5 |
| Rear Legroom | Not available | 822mm |
| Practicality | ||
| Turning Circle | 9.4m (better) | 10.8m |
| Kerb Weight | 1,492kg (better) | 1,720kg |
| Towing Capacity | Not available | 750kg |
| Electric | ||
| Battery | 41kWh (better) | 38.5kWh |
| Range (WLTP) | 205 mi (better) | 191 mi |
| Max DC Charge | 100kW (better) | 75kW |
| Pricing | ||
| UK MSRP | Not available | £28,310 |
| Details | ||
| Body Style | Hatchback | SUV |
| Available | 2026+ | 2024+ |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | fireflyBase | MINI AcemanE |
|---|---|---|
| Official range (WLTP) | 205 miles (better) | 191 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 171 miles (better) | 159 miles |
| 10-80% rapid charge time | 25 min (better) | 29 min |
| Max rapid charge rate | 100 kW (better) | 75 kW |
| Home AC charging | 11 kW | 11 kW |
| Usable battery capacity | 41 kWh (better) | 38.5 kWh |
| Battery chemistry | NMC | NMC |
| Battery architecture | 400V | 400V |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | fireflyBase | MINI AcemanE |
|---|---|---|
| 0-62 mph | 8.1 sec (better) | 12.7 sec |
| Power | 105 kW | 135 kW (better) |
| Torque | 200 Nm | 290 Nm (better) |
| Drivetrain | RWD | 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.
firefly
Base
No critic reviews gathered yet for this car.
MINI Aceman
E
Watch the reviews
Watch selected video reviews here, or visit each model page for the full collection.
firefly
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 - firefly firefly Base
Tested 2025
Adult Occupant96%
Child Occupant87%
Vulnerable Road Users82%
Safety Assist86%
Full result on euroncap.com (opens in new tab)
Euro NCAP - MINI Aceman E
Tested 2025
Adult Occupant83%
Child Occupant87%
Vulnerable Road Users77%
Safety Assist79%
Full result on euroncap.com (opens in new tab)
Buying options
Get a quote
firefly
Used on AutoTraderLease deals
MINI Aceman
Used on AutoTraderLease deals
Frequently asked questions
What are the firefly firefly and MINI Aceman like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 171 miles for the firefly firefly and 159 miles for the MINI Aceman - 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 25-29 minutes.
Which is easier to park and drive in town, the firefly firefly or the MINI Aceman?
The two are within 27 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 646 mm of total clearance for the MINI Aceman and about 619 mm of total clearance for the firefly firefly. The firefly firefly also turns in a 1.4 m tighter circle, which helps with U-turns and multi-storey ramps.
Which battery will hold up better as a used buy, the firefly firefly or the MINI Aceman?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the firefly firefly and 84% for the MINI Aceman. 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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More MINI Aceman 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 firefly firefly and MINI Aceman rank among the best family EVsWhere the firefly firefly and MINI Aceman rank among the best small electric carsWhere the firefly firefly and MINI Aceman rank among the best motorway EVsWhere the firefly firefly and MINI Aceman rank among the best city EVsWhere the firefly firefly and MINI Aceman rank among the cheapest EVs to runWhere the firefly firefly and MINI Aceman 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.
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .