In this comparison, Audi Q6 e-tron leads on motorway range, charging speed and running costs, while the Smart #5 leads on value for money, family practicality and city driving.
Choose the Audi Q6 e-tron if...
Choose the Smart #5 if...
Our take
The Audi Q6 e-tron leads in the most categories, but each car here has its strengths.
See the specification differences behind the verdict, with supporting figures for each advantage.
quattro
Compare the key specifications for your selected trims.
| Measure | Audi Q6 e-tronquattro | Smart #5Pro |
|---|---|---|
| Price | £68,975 | £39,800 (better) |
| Official range | 381 miles (better) | 288 miles |
| Boot space | 526 L | 630 L (better) |
| 10-80% rapid charge | 22 min (better) | 30 min |
| 0-62 mph | 5.9 sec (better) | 6.9 sec |
Size Comparison
Length
Width
Height
Compare exterior dimensions to assess how each car fits UK parking spaces.
| Measure | Audi Q6 e-tronquattro | Smart #5Pro |
|---|---|---|
| Length | 4,771 mm | 4,695 mm |
| Width (mirrors folded) | 1,939 mm | 1,920 mm (better) |
| Width with mirrors out | 2,193 mm | 2,169 mm (better) |
| Height | 1,685 mm | 1,705 mm |
| Turning circle | 12.1 m | Not available |
| Clearance in a standard bayA standard UK parking bay is 2,400 mm wide. | 461 mm spare | 480 mm spare (better) |
Compare seating, child-seat mounting points, boot space and towing capacity.
| Measure | Audi Q6 e-tronquattro | Smart #5Pro |
|---|---|---|
| Seats | 5 | 5 |
| Boot space (seats up) | 526 L | 630 L (better) |
| Boot space (seats down) | 1529 L | 1530 L (better) |
| Frunk | Not available | 47 L |
| Towing capacity (braked) | 2,000 kg (better) | 1,600 kg |
Percentile ranks against UK EVs of the same body style.
Audi Q6 e-tron
Smart #5
| Specification | Audi Q6 e-tron quattro | Smart #5 Pro |
|---|---|---|
| Dimensions | ||
| Length | 4.77m | 4.70m-76mm |
| Width | 1.94m | 1.92m-19mm |
| Width (mirrors) | 2.19m | 2.17m-24mm |
| Height | 1.69m | 1.71m+20mm |
| Wheelbase | 2.89m | 2.90m+11mm |
| Ground Clearance | Not available | 190mm |
| Capacity | ||
| Boot (seats up) | 526L | 630L (better) |
| Boot (seats down) | 1529L | 1530L (better) |
| Frunk | Not available | 47L |
| Seats | 5 | 5 |
| Practicality | ||
| Turning Circle | 12.1m | Not available |
| Kerb Weight | 2,150kg (better) | 2,200kg |
| Towing Capacity | 2,000kg (better) | 1,600kg |
| Electric | ||
| Battery | 100kWh (better) | 76kWh |
| Range (WLTP) | 381 mi (better) | 288 mi |
| Max DC Charge | 270kW (better) | 150kW |
| Pricing | ||
| UK MSRP | £68,975 | £39,800 (better) |
| Details | ||
| Body Style | SUV | SUV |
| Available | 2024+ | 2025+ |
Check official and estimated driving range alongside charging speeds, efficiency and battery technology.
| Measure | Audi Q6 e-tronquattro | Smart #5Pro |
|---|---|---|
| Official range (WLTP) | 381 miles (better) | 288 miles |
| Estimated motorway rangeEVcarsguide estimate at sustained motorway speed. | 318 miles (better) | 202 miles |
| 10-80% rapid charge time | 22 min (better) | 30 min |
| Max rapid charge rate | 270 kW (better) | 150 kW |
| Home AC charging | 11 kW | 11 kW |
| Energy consumption | Not available | 185 Wh/km |
| Usable battery capacity | 94.9 kWh (better) | 76 kWh |
| Battery chemistry | NMC | LFP |
| Battery architecture | 800V | 800V |
| Heat pump | Not available | Not standard |
Compare acceleration, power and drivetrain specifications for the selected trims.
| Measure | Audi Q6 e-tronquattro | Smart #5Pro |
|---|---|---|
| 0-62 mph | 5.9 sec (better) | 6.9 sec |
| Power | 285 kW (better) | 250 kW |
| Torque | 485 Nm (better) | 373 Nm |
| Drivetrain | AWD | RWD |
See how UK motoring publications rate each car in their road tests.

Audi Q6 e-tron
quattro

Smart #5
Pro
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.
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 2024
Tested 2025
Check the published battery warranty cover for each selected trim.
| Measure | Audi Q6 e-tronquattro | Smart #5Pro |
|---|---|---|
| Battery warranty | 8 years | 8 years |
| Battery warranty distance | 160,934 km | Not available |
Aggregated from UK owner forums and communities - the things you only learn after living with the car.
Shared watch-outs for both cars
Owners of every car here flag infotainment & software. Worth checking on a test drive whichever you choose.

Audi Q6 e-tron
quattro

Smart #5
Pro
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Audi Q6 e-tron
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The Audi Q6 e-tron costs £29,175 more than the Smart #5. For that premium it adds 93 miles more WLTP range, 120 kW faster peak rapid charging and 35 kW more power. The Smart #5 is not just cheaper - it also offers 104 litres more boot space. On EVcarsguide's combined category scores, the Audi Q6 e-tron comes out ahead overall.
The Smart #5 is £29,175 cheaper to buy. Running costs are almost identical - about £176 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Smart #5 comes out roughly £29,055 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 318 miles for the Audi Q6 e-tron and 202 miles for the Smart #5 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Audi Q6 e-tron goes roughly 116 miles further between charging stops. A rapid charge to 80% takes around 22 minutes in the Audi Q6 e-tron and 30 in the Smart #5, so the Audi Q6 e-tron loses less time at each stop. That makes the Audi Q6 e-tron the stronger long-distance car.
The two are within 19 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 480 mm of total clearance for the Smart #5 and about 461 mm of total clearance for the Audi Q6 e-tron.
Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the Audi Q6 e-tron and 90% for the Smart #5. That gives the Smart #5 a modest edge in retained real-world range. The Smart #5's LFP-type pack tolerates daily 100% charging, while the Audi Q6 e-tron's NMC-type pack lasts longest kept to about 80% for everyday use. Both batteries carry a 8-year manufacturer warranty.
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 Q6 e-tron comparisons
More Smart #5 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 .