Loading comparison
Audi Q4 e-tron vs BMW iX (2021-2025)
Selected trimxDrive40 · 2021-25Change trim257 mi · 76.6 kWh · £69,905
At a glance
In this comparison, Audi Q4 e-tron leads on value for money, motorway range and charging speed, while the BMW iX stays competitive across the board.
Which should you choose?
Choose the Audi Q4 e-tron 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 want the lowest running costs - from just 2p per mile on off-peak electricity
- you drive in the city - it's compact with an excellent turning circle
How we reached the recommendation
Verdict
Our take
The Audi Q4 e-tron wins almost every category - it's the clear choice unless price is the deciding factor.
ValueAudi
Audi
5.3
BMW
4.1
Motorway RangeAudi
Audi
5.4
BMW
3
Family
Audi
7.7
BMW
7.8
Too close to call
ChargingAudi
Audi
5.5
BMW
3.7
Cost Per MileAudi
Audi
6.9
BMW
1.6
City DrivingAudi
Audi
5.9
BMW
0.9
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 | Audi Q4 e-trone-tron 204PS | BMW iXxDrive40 |
|---|---|---|
| Price | £46,260 (better) | £69,905 |
| Official range | 274 miles (better) | 257 miles |
| Boot space | 520 L (better) | 500 L |
| 10-80% rapid charge | Not available | 35 min |
| 0-62 mph | 8.1 sec | 4.6 sec (better) |
Size Comparison
View:
Align by:
Audi Q4 e-tron
BMW iX
Length
Audi Q4 e-tron4,588mm-377mm
BMW iX4,965mm
Width
Audi Q4 e-tron1,865mm-105mm
BMW iX1,970mm
Height
Audi Q4 e-tron1,632mm-63mm
BMW iX1,695mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | Audi Q4 e-trone-tron 204PS | BMW iXxDrive40 |
|---|---|---|
| Length | 4,588 mm | 4,965 mm |
| Width (mirrors folded) | 1,865 mm (better) | 1,970 mm |
| Width with mirrors out | 2,108 mm | Not available |
| Height | 1,632 mm | 1,695 mm |
| Turning circle | 10.2 m (better) | 12.8 m |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 535 mm spare (better) | 430 mm spare |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | Audi Q4 e-trone-tron 204PS | BMW iXxDrive40 |
|---|---|---|
| Seats | 5 | 5 |
| Boot space (seats up) | 520 L (better) | 500 L |
| Boot space (seats down) | 1490 L | 1750 L (better) |
| Towing capacity (braked) | Not available | 2,500 kg |
How each stacks up
Percentile ranks against UK EVs of the same body style.
Audi Q4 e-tron
Not enough peers to make confident percentile claims.
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.
Full specifications
| Specification |  Audi Q4 e-tron e-tron 204PS |  BMW iX xDrive40 |
|---|---|---|
| Dimensions | ||
| Length | 4.59m | 4.96m+377mm |
| Width | 1.86m | 1.97m+105mm |
| Width (mirrors) | 2.11m | Not available |
| Height | 1.63m | 1.70m+63mm |
| Wheelbase | 2.76m | 3.00m+236mm |
| Capacity | ||
| Boot (seats up) | 520L (better) | 500L |
| Boot (seats down) | 1490L | 1750L (better) |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 10.2m (better) | 12.8m |
| Kerb Weight | 1,940kg | Not available |
| Towing Capacity | Not available | 2,500kg |
| Electric | ||
| Battery | 63kWh | 76.6kWh (better) |
| Range (WLTP) | 274 mi (better) | 257 mi |
| Max DC Charge | 160kW (better) | 150kW |
| Pricing | ||
| UK MSRP | £46,260 (better) | £69,905 |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2026+ | 2021–2025 |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | Audi Q4 e-trone-tron 204PS | BMW iXxDrive40 |
|---|---|---|
| Official range (WLTP) | 274 miles (better) | 257 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 229 miles (better) | 214 miles |
| 10-80% rapid charge time | Not available | 35 min |
| Max rapid charge rate | 160 kW (better) | 150 kW |
| Home AC charging | 11 kW | 11 kW |
| Usable battery capacity | 59 kWh | 71 kWh (better) |
| Battery chemistry | NMC | NMC |
| Battery architecture | 400V | Not available |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | Audi Q4 e-trone-tron 204PS | BMW iXxDrive40 |
|---|---|---|
| 0-62 mph | 8.1 sec | 4.6 sec (better) |
| Power | 150 kW | 240 kW (better) |
| Torque | 310 Nm | 765 Nm (better) |
| Drivetrain | RWD | AWD |
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.
Audi Q4 e-tron
e-tron 204PS
BMW iX
xDrive40
No critic reviews gathered yet for this car.
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 - Audi Q4 e-tron e-tron 204PS
Tested 2025
Adult Occupant91%
Child Occupant87%
Vulnerable Road Users79%
Safety Assist73%
Full result on euroncap.com (opens in new tab)
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)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | Audi Q4 e-trone-tron 204PS | BMW iXxDrive40 |
|---|---|---|
| Battery warranty | 8 years | 8 years |
| Battery warranty distance | 160,934 km | 160,934 km |
Buying options
Get a quote
Audi Q4 e-tron
Used on AutoTraderLease deals
BMW iX
Used on AutoTraderLease deals
Live used listings
Active inventory from independent UK dealers.
Audi Q4 e-tron
No active listings.
BMW iX
- £31,6302021Car360View
- £26,3502022Anchor CarsView
Frequently asked questions
Is the BMW iX worth the extra £23,645 over the Audi Q4 e-tron?
The BMW iX costs £23,645 more than the Audi Q4 e-tron. For that premium it adds 90 kW more power and a 3.5s quicker 0-62mph time. On EVcarsguide's combined category scores, the Audi Q4 e-tron comes out ahead overall.
Which is cheaper to own over 5 years, the Audi Q4 e-tron or the BMW iX?
The Audi Q4 e-tron is £23,645 cheaper to buy. The Audi Q4 e-tron is cheaper to charge, roughly £160 a year versus £200 for the BMW iX, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Audi Q4 e-tron comes out roughly £23,845 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.
What are the Audi Q4 e-tron and BMW iX like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 229 miles for the Audi Q4 e-tron and 214 miles for the BMW iX - effectively matched, and both well below their WLTP figures because sustained high speed is the hardest case for an EV.
Which is easier to park and drive in town, the Audi Q4 e-tron or the BMW iX?
The Audi Q4 e-tron is the easier car for tight UK car parks: it is 105 mm narrower than the BMW iX. In a standard 2,400 mm bay that leaves about 535 mm of total clearance for the Audi Q4 e-tron and about 430 mm of total clearance for the BMW iX. The Audi Q4 e-tron also turns in a 2.6 m tighter circle, which helps with U-turns and multi-storey ramps.
Which battery will hold up better as a used buy, the Audi Q4 e-tron or the BMW iX?
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the Audi Q4 e-tron and 84% for the BMW iX. 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.
More Audi Q4 e-tron comparisons
More BMW iX 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 Audi Q4 e-tron and BMW iX rank among the best family EVsWhere the Audi Q4 e-tron and BMW iX rank among the best electric SUVsWhere the Audi Q4 e-tron and BMW iX rank among the best motorway EVsWhere the Audi Q4 e-tron and BMW iX rank among the best city EVsWhere the Audi Q4 e-tron and BMW iX rank among the cheapest EVs to runWhere the Audi Q4 e-tron and BMW iX 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.
Further reading
Explore buying and ownership guides to help you choose between these electric cars.
GuideBuying a Used Audi Q4 e-tron (2021 on): 35, 40, 45, 50 or 55, the Recall, Range & What to Check
A used Audi Q4 e-tron buyer’s guide: every version and battery explained, the 2021-2023 cars vs the 2024 update, the brake-software recall, warranty left, real-world range, what to pay, used vs new, and a printable checklist.
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.
Data accuracy
Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .