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Audi A6 Sportback e-tron vs BMW iX3
Selected trimperformanceChange trim463 mi · 100 kWh · £69,900
Selected trim40Change trim395 mi · 82.6 kWh · £53,250
At a glance
In this comparison, Audi A6 Sportback e-tron leads on motorway range and running costs, while the BMW iX3 leads on charging speed and city driving.
Which should you choose?
Choose the Audi A6 Sportback e-tron if...
- you do long motorway journeys - it has the best estimated real-world range at speed
- you want the lowest running costs - from just 1.8p per mile on off-peak electricity
Choose the BMW iX3 if...
- you need the fastest charging of these options
- you need the best car for city driving and tight parking
How we reached the recommendation
Verdict
Our take
The Audi A6 Sportback e-tron edges ahead overall, but it's close - check which categories matter most to you.
Value
Audi
6.6
BMW
6.2
Too close to call
Motorway RangeAudi
Audi
8.8
BMW
7.8
Family
Audi
7.7
BMW
8
Too close to call
ChargingBMW
Audi
6.8
BMW
8.3
Cost Per MileAudi
Audi
8.4
BMW
6.4
City DrivingBMW
Audi
1.9
BMW
3.3
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 | Audi A6 Sportback e-tronperformance | BMW iX340 |
|---|---|---|
| Price | £69,900 | £53,250 (better) |
| Official range | 463 miles (better) | 395 miles |
| Boot space | 502 L | 520 L (better) |
| 10-80% rapid charge | 21 min | 21 min |
| 0-62 mph | 5.4 sec (better) | 6 sec |
Size Comparison
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Audi A6 Sportback e-tron
BMW iX3
Length
Audi A6 Sportback e-tron4,928mm
BMW iX34,782mm-146mm
Width
Audi A6 Sportback e-tron1,882mm-13mm
BMW iX31,895mm
Height
Audi A6 Sportback e-tron1,487mm-148mm
BMW iX31,635mm
Space, size & parking
Parking & manoeuvring
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | Audi A6 Sportback e-tronperformance | BMW iX340 |
|---|---|---|
| Length | 4,928 mm | 4,782 mm |
| Width (mirrors folded) | 1,882 mm (better) | 1,895 mm |
| Width with mirrors out | 2,137 mm | 2,093 mm (better) |
| Height | 1,487 mm | 1,635 mm |
| Turning circle | 12.3 m | 12.1 m (better) |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 518 mm spare (better) | 505 mm spare |
People & luggage
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | Audi A6 Sportback e-tronperformance | BMW iX340 |
|---|---|---|
| Seats | 5 | Not available |
| Boot space (seats up) | 502 L | 520 L (better) |
| Boot space (seats down) | 1330 L | 1750 L (better) |
| Frunk | 27 L | 58 L (better) |
How each stacks up
Percentile ranks against UK EVs of the same body style.
Audi A6 Sportback e-tron
Not enough peers to make confident percentile claims.
BMW iX3
- 395 mile WLTP range, longer than 95% of SUVs we track.
- Peak DC charging of 300 kW, faster than 90% of SUVs in our catalogue.
- Uses 146 Wh/km on the WLTP cycle, more efficient than 95% of SUVs we track.
Full specifications
| Specification |  Audi A6 Sportback e-tron performance |  BMW iX3 40 |
|---|---|---|
| Dimensions | ||
| Length | 4.93m | 4.78m-146mm |
| Width | 1.88m | 1.90m+13mm |
| Width (mirrors) | 2.14m | 2.09m-44mm |
| Height | 1.49m | 1.64m+148mm |
| Wheelbase | 2.95m | 2.90m-50mm |
| Capacity | ||
| Boot (seats up) | 502L | 520L (better) |
| Boot (seats down) | 1330L | 1750L (better) |
| Frunk | 27L | 58L (better) |
| Seats | 5 | Not available |
| Practicality | ||
| Turning Circle | 12.3m | 12.1m (better) |
| Kerb Weight | 2,250kg | 2,200kg (better) |
| Electric | ||
| Battery | 100kWh (better) | 82.6kWh |
| Range (WLTP) | 463 mi (better) | 395 mi |
| Max DC Charge | 270kW | 300kW (better) |
| Pricing | ||
| UK MSRP | £69,900 | £53,250 (better) |
| Details | ||
| Body Style | Saloon | SUV |
| Available | 2024+ | 2026+ |
Range & charging
Range, charging & battery
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | Audi A6 Sportback e-tronperformance | BMW iX340 |
|---|---|---|
| Official range (WLTP) | 463 miles (better) | 395 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 386 miles (better) | 293 miles |
| 10-80% rapid charge time | 21 min | 21 min |
| Max rapid charge rate | 270 kW | 300 kW (better) |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | Not available | 146 Wh/km |
| Usable battery capacity | 94.9 kWh (better) | 82.6 kWh |
| Battery chemistry | NMC | Not available |
| Battery architecture | 800V | 800V |
Driving & everyday use
Performance & drivetrain
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | Audi A6 Sportback e-tronperformance | BMW iX340 |
|---|---|---|
| 0-62 mph | 5.4 sec (better) | 6 sec |
| Power | 280 kW (better) | 235 kW |
| Torque | 565 Nm (better) | 500 Nm |
| Drivetrain | RWD | RWD |
What the critics say
See how UK motoring publications rate each car in their road tests.
Audi A6 Sportback e-tron
performance
BMW iX3
40
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 A6 Sportback e-tron performance
Tested 2025
Adult Occupant92%
Child Occupant91%
Safety Assist80%
Full result on euroncap.com (opens in new tab)
Euro NCAP - BMW iX3 40
Tested 2026
Full result on euroncap.com (opens in new tab)
Warranty
Check the published battery warranty cover for each selected trim.
| Measure | Audi A6 Sportback e-tronperformance | BMW iX340 |
|---|---|---|
| Battery warranty | 8 years | Not available |
| Battery warranty distance | 160,934 km | Not available |
Buying options
Get a quote
Audi A6 Sportback e-tron
Used on AutoTraderLease deals
BMW iX3
Used on AutoTraderLease deals
Frequently asked questions
Is the Audi A6 Sportback e-tron worth the extra £16,650 over the BMW iX3?
The Audi A6 Sportback e-tron costs £16,650 more than the BMW iX3. For that premium it adds 68 miles more WLTP range and 45 kW more power. The BMW iX3 is not just cheaper - it also offers 30 kW faster peak rapid charging. On EVcarsguide's combined category scores, the Audi A6 Sportback e-tron comes out ahead overall.
Which is cheaper to own over 5 years, the Audi A6 Sportback e-tron or the BMW iX3?
The BMW iX3 is £16,650 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 BMW iX3 comes out roughly £16,570 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 A6 Sportback e-tron and BMW iX3 like on a long motorway trip?
EVcarsguide estimates a real-world motorway range of about 386 miles for the Audi A6 Sportback e-tron and 293 miles for the BMW iX3 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Audi A6 Sportback e-tron goes roughly 93 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 21-21 minutes.
Which is easier to park and drive in town, the Audi A6 Sportback e-tron or the BMW iX3?
The two are within 13 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 518 mm of total clearance for the Audi A6 Sportback e-tron and about 505 mm of total clearance for the BMW iX3.
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 A6 Sportback e-tron comparisons
More BMW iX3 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 A6 Sportback e-tron and BMW iX3 rank among long-range EVsWhere the Audi A6 Sportback e-tron and BMW iX3 rank among the best motorway EVsWhere the Audi A6 Sportback e-tron and BMW iX3 rank among the best city EVsWhere the Audi A6 Sportback e-tron and BMW iX3 rank among the cheapest EVs to runWhere the Audi A6 Sportback e-tron and BMW iX3 rank among EVs with the biggest bootsWhere the Audi A6 Sportback e-tron and BMW iX3 rank among Best Used Electric Cars Under £10,000 (UK)
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 .