In this comparison, Audi Q8 e-tron stays competitive across the board, while the Hyundai IONIQ 9 leads on value for money, motorway range and family practicality.
Choose the Hyundai IONIQ 9 if...
Our take
The Hyundai IONIQ 9 wins almost every category - it's the clear choice unless price is the deciding factor.
See the specification differences behind the verdict, with supporting figures for each advantage.
50 quattro
Long-Range RWD
Compare the key specifications for your selected trims.
| Measure | Audi Q8 e-tron50 quattro | Hyundai IONIQ 9Long-Range RWD |
|---|---|---|
| Price | £67,800 | £64,995 (better) |
| Official range | 281 miles | 385 miles (better) |
| Boot space | 569 L (better) | 338 L |
| 10-80% rapid charge | 31 min | 24 min (better) |
| 0-62 mph | 5.6 sec (better) | 9.4 sec |
Size Comparison
Length
Width
Height
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | Audi Q8 e-tron50 quattro | Hyundai IONIQ 9Long-Range RWD |
|---|---|---|
| Length | 4,915 mm | 5,060 mm |
| Width (mirrors folded) | 1,937 mm (better) | 1,980 mm |
| Width with mirrors out | 2,189 mm (better) | 2,239 mm |
| Height | 1,633 mm | 1,790 mm |
| Turning circle | 12.2 m (better) | 12.5 m |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 463 mm spare (better) | 420 mm spare |
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | Audi Q8 e-tron50 quattro | Hyundai IONIQ 9Long-Range RWD |
|---|---|---|
| Seats | 5 | 7 (better) |
| ISOFIX child-seat points | 2 | Not available |
| Boot space (seats up) | 569 L (better) | 338 L |
| Boot space (seats down) | 1637 L | 1990 L (better) |
| Frunk | Not available | 88 L |
| Towing capacity (braked) | 1,800 kg (better) | 1,500 kg |
Percentile ranks against UK EVs of the same body style.
Audi Q8 e-tron
Hyundai IONIQ 9
| Specification | Audi Q8 e-tron 50 quattro | Hyundai IONIQ 9 Long-Range RWD |
|---|---|---|
| Dimensions | ||
| Length | 4.92m | 5.06m+145mm |
| Width | 1.94m | 1.98m+43mm |
| Width (mirrors) | 2.19m | 2.24m+50mm |
| Height | 1.63m | 1.79m+157mm |
| Wheelbase | 2.93m | 3.13m+202mm |
| Ground Clearance | 172mm | Not available |
| Capacity | ||
| Boot (seats up) | 569L (better) | 338L |
| Boot (seats down) | 1637L | 1990L (better) |
| Frunk | Not available | 88L |
| Seats | 5 | 7 (better) |
| Practicality | ||
| Turning Circle | 12.2m (better) | 12.5m |
| Kerb Weight | 2,595kg | 2,541kg (better) |
| Towing Capacity | 1,800kg (better) | 1,500kg |
| Electric | ||
| Battery | 95kWh | 110.3kWh (better) |
| Range (WLTP) | 281 mi | 385 mi (better) |
| Max DC Charge | 150kW | 233kW (better) |
| Pricing | ||
| UK MSRP | £67,800 | £64,995 (better) |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2023–2025 | 2025+ |
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | Audi Q8 e-tron50 quattro | Hyundai IONIQ 9Long-Range RWD |
|---|---|---|
| Official range (WLTP) | 281 miles | 385 miles (better) |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 234 miles | 321 miles (better) |
| 10-80% rapid charge time | 31 min | 24 min (better) |
| Max rapid charge rate | 150 kW | 233 kW (better) |
| Home AC charging | 11 kW (better) | 10.5 kW |
| Usable battery capacity | 89 kWh | 110.3 kWh (better) |
| Battery chemistry | NMC | NCMA |
| Battery architecture | 400V | 800V (better) |
| Heat pump | Standard | Standard |
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | Audi Q8 e-tron50 quattro | Hyundai IONIQ 9Long-Range RWD |
|---|---|---|
| 0-62 mph | 5.6 sec (better) | 9.4 sec |
| Power | 250 kW (better) | 160 kW |
| Torque | 664 Nm (better) | 350 Nm |
| Drivetrain | AWD | RWD |
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 Q8 e-tron
50 quattro
No critic reviews gathered yet for this car.

Hyundai IONIQ 9
Long-Range RWD
Reviews and videos discuss each model overall; the specifications above apply to your selected trims.
Current pricing and recent used-market behaviour.
| Measure | Audi Q8 e-tron50 quattro | Hyundai IONIQ 9Long-Range RWD |
|---|---|---|
| Used market price from | £26,718 | £54,999 |
| Average used price | £35,973 | £54,999 |
| Active used listings trackedIndependent UK dealer listings seen in the last 90 days. | 22 listings (better) | 4 listings |
| Recent used-price trend | Down 16.7% over ~6 months | Down 1.2% over ~6 months |
Used prices are indicative figures gathered from independent UK dealer listings and change frequently.
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.
Tested 2019
Tested 2025
Check the published battery warranty cover for each selected trim.
| Measure | Audi Q8 e-tron50 quattro | Hyundai IONIQ 9Long-Range RWD |
|---|---|---|
| Battery warranty | 8 years | Not available |
| Battery warranty distance | 160,000 km | Not available |
Get a quote
Audi Q8 e-tron
Hyundai IONIQ 9
Active inventory from independent UK dealers.
Audi Q8 e-tron
Hyundai IONIQ 9
The Audi Q8 e-tron costs £2,805 more than the Hyundai IONIQ 9. For that premium it adds 231 litres more boot space, 90 kW more power and a 3.8s quicker 0-62mph time. The Hyundai IONIQ 9 is not just cheaper - it also offers 104 miles more WLTP range, 83 kW faster peak rapid charging and 2 more seats (7 versus 5). On EVcarsguide's combined category scores, the Hyundai IONIQ 9 comes out ahead overall.
The Hyundai IONIQ 9 is £2,805 cheaper to buy. The Hyundai IONIQ 9 is cheaper to charge, roughly £192 a year versus £232 for the Audi Q8 e-tron, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Hyundai IONIQ 9 comes out roughly £3,005 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.
EVcarsguide estimates a real-world motorway range of about 234 miles for the Audi Q8 e-tron and 321 miles for the Hyundai IONIQ 9 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Hyundai IONIQ 9 goes roughly 87 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 24-31 minutes.
The Audi Q8 e-tron is the easier car for tight UK car parks: it is 43 mm narrower than the Hyundai IONIQ 9. In a standard 2,400 mm bay that leaves about 463 mm of total clearance for the Audi Q8 e-tron and about 420 mm of total clearance for the Hyundai IONIQ 9. The Audi Q8 e-tron also turns in a 0.3 m tighter circle, which helps with U-turns and multi-storey ramps.
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the Audi Q8 e-tron and 89% for the Hyundai IONIQ 9. That gives the Hyundai IONIQ 9 a modest edge in retained real-world range. Both use NMC-type cells, so for daily use keep the charge limit near 80% to slow degradation.
Visit the full model pages for owner feedback, expert reviews, used prices and battery-health information.
Compare similarly sized and priced electric cars before finalising your shortlist.
More Audi Q8 e-tron comparisons
More Hyundai IONIQ 9 comparisons
EVcarsguide scores every verified EV on price, range, family use and running costs. Here is where this pair appears.
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Specs are sourced from manufacturer websites and manually reviewed. These figures were last verified .