Comparison
BYD Sealion 7 vs Tesla Model Y (UK): Which Large Electric SUV Actually Wins in 2026?
Kai Zhang, Editor-in-Chief · Editor-in-Chief · Updated 16 Jul 2026Pricing and value: closer than you think
The BYD Sealion 7 Comfort starts at £47,025 and the Tesla Model Y RWD Long Range from around £43,990 — a gap of roughly £3,000. At AWD level the difference narrows to about £1,000 (Sealion 7 Design at £52,025 vs Model Y AWD at £50,990). Both attract the Expensive Car Supplement from year two (all trims clear the £40,000 threshold), and both sit at 4% BiK for company-car drivers in 2026/27. On lease, pricing is comparable but varies by deposit, term, and current manufacturer offers — check both at time of order.
The BYD's price has been rising: the entry trim was £44,990 at UK launch in December 2024 and has since climbed to £47,025 — a 4.5% increase in eighteen months. Tesla by contrast has a track record of price cuts in response to demand signals, which affects residuals but can mean better deals for new buyers.
| Feature | BYD Sealion 7 | Tesla Model Y |
|---|---|---|
| entry price | £47,025 OTR (Comfort RWD, Jul 2026) — up from £44,990 at UK launch in Dec 2024 | From approx £43,990 OTR (RWD Long Range, Apr 2026) — verify directly with Tesla before ordering as pricing adjusts frequentlySecondary |
| AWD entry price | £52,025 OTR (Design AWD, 82.5 kWh, Jul 2026) | From approx £50,990 OTR (Model Y AWD, Apr 2026) — verify with Tesla before orderingSecondary |
| company car BiK | 4% BiK for 2026/27 — same as all zero-emission cars; lowest available band | 4% BiK for 2026/27 — same rate as BYD; company car running costs are effectively equivalent here |
Range and charging: Tesla leads on miles, BYD closes the gap at the top trim
WLTP range is where the Tesla Model Y RWD Long Range has a clear edge: 373 miles versus the Sealion 7 Comfort's 300 miles — a 24% advantage on paper. In the real world, both fall short: Autocar's 70 mph touring test put the Sealion 7 Comfort at 223 miles, while Tesla's real-world motorway figures typically land at 70–75% of WLTP (around 260–280 miles). The gap is real but smaller in practice than the headline numbers suggest.
On DC charging, the picture inverts at entry level but equalises at the top. The Tesla Model Y charges at up to 250 kW at V3 Superchargers (and many rapid chargers); the Sealion 7 Comfort and Design are capped at 150 kW — a meaningful 40% slower. Only the Sealion 7 Excellence (£59,025) matches with 230 kW. The Tesla Supercharger network remains the most reliable rapid-charging infrastructure in the UK, which counts for real-world charging confidence. The BYD is compatible with any CCS rapid charger but lacks a dedicated network.
| Feature | BYD Sealion 7 | Tesla Model Y |
|---|---|---|
| WLTP range | 300 mi (Comfort RWD) · 283 mi (Design AWD) · 312 mi (Excellence AWD) — WLTP figures, verified BYD UK | Approx 373 mi (RWD LR) — 73 miles more than the Sealion 7 Comfort on paper; verify current spec with TeslaSecondary |
| real-world motorway range | Autocar touring test at 70 mph: 223 mi (Comfort); What Car? estimate ~249 mi. Real-world is 67–83% of WLTP. | Typically 70–75% of WLTP at motorway speed (~260–280 mi). Autocar tests generally confirm this ratio. Verify via current Tesla owners.Secondary |
| peak DC charging speed | Comfort/Design: 150 kW (10–80% in ~32 min). Excellence only: 230 kW (10–80% in ~24 min). Note: Autocar real-world average was 73 kW — peak rate rarely sustained. | Up to 250 kW at V3 Superchargers; compatible with CCS. Access to Tesla Supercharger network (UK's most reliable rapid charging infrastructure) is a meaningful practical advantage. |
Warranty and reliability: BYD's strongest card
The BYD Sealion 7's best argument is its warranty. Eight years and 155,000 miles of battery and motor coverage is genuinely best in class — beating Tesla's 8-year/120,000-mile battery cover by 35,000 miles, and the 6-year/93,750-mile vehicle warranty easily outclasses Tesla's 4-year/50,000-mile body warranty. For higher-mileage drivers or buyers who keep cars for seven or more years, this difference is not trivial.
BYD's Chinese owner data provides additional context the mainstream UK press rarely has. The 懂车帝 score of 3.89/5.0 (below class average) and 车质网 complaint patterns — rear tyre wear, infotainment glitches, suspension stiffness — are worth knowing. These appear to be platform-level characteristics, not market-specific: the same tyre wear pattern is documented in UK Seals (same platform) and Australian Sealion 7s. Tesla has its own well-documented quality-control concerns (panel gaps, build consistency), extensively reported by UK and US publications. Neither car is without known issues — the difference is BYD gives you a longer warranty if something goes wrong.
Practicality and safety: the boot gap is the deciding factor for many families
The single biggest practical difference between these two cars is boot space. The Tesla Model Y delivers 854 litres with the rear seats up — 334 litres (64%) more than the BYD Sealion 7's 520 litres. For families loading pushchairs, large luggage, or sporting equipment, this is the comparison that settles the argument. The Tesla also has a front storage compartment (frunk), though it is modest at around 117 litres compared with BYD's 58-litre frunk.
On safety, both earn Euro NCAP 5-star ratings, though the BYD was tested more recently (2025) while the Tesla was tested in 2022. Standard ADAS kit on both includes adaptive cruise, lane assist, automatic emergency braking, and blind-spot monitoring. The BYD includes V2L at 3.3 kW on all trims — a useful feature for camping, events, or backup power — while the Tesla does not offer V2L as standard.
Verdict: choose by what matters most to you
Neither car is the obvious winner — they're genuinely different bets. The Tesla Model Y is the better long-distance motorway tool: more range, faster charging at Supercharger speeds, and a boot large enough to swallow what a family actually needs. It is also the product of a more mature UK dealer and service infrastructure. If you drive 15,000+ miles a year and regularly need a 250-mile run without planning around a charge stop, buy the Tesla.
The BYD Sealion 7 makes the stronger ownership-cost argument. Its 8-year/155,000-mile battery warranty is unmatched at this price, and its standard V2L is a useful feature that Tesla doesn't offer. For company-car drivers the BiK is identical. For buyers who keep cars for 7–8 years and want the peace of mind of a long warranty from the world's second-largest EV maker, the Sealion 7 is a serious choice — especially on the Excellence trim (£59,025), which closes the charging gap and delivers 312 WLTP miles.
One practical note: if you're considering the Sealion 7 Comfort (£47,025), test-drive back-to-back with the Tesla Model Y before signing. The boot difference alone may settle it.
| Feature | BYD Sealion 7 | Tesla Model Y |
|---|---|---|
| strongest argument | Best-in-class battery warranty (8yr/155k mi), standard V2L (3.3 kW), BYD's scale and vertical integration, and a lower BiK-equivalent running cost vs brand survival risk than most Chinese rivals | 73 more WLTP miles (RWD vs Comfort), 250 kW Supercharger network access, 334 L more boot space, and a more established UK service infrastructure |
| best trim to consider | Excellence (£59,025): the only trim with 800V/230 kW charging, 312 mi WLTP, and 91.3 kWh. Comfort (£47,025) is better value but limited by 150 kW charging at this price point. | RWD Long Range (~£43,990) is the value pick — more range than Sealion 7 Comfort for less money, same Supercharger access. AWD (~£50,990) for traction or performance.Secondary |
| who it suits | Buyers who prioritise warranty length, brand longevity, V2L capability, and company-car BiK efficiency — especially those keeping the car for 6+ years | Buyers who prioritise real-world range, charging network reliability (Supercharger), and maximum boot space — especially higher-mileage motorway drivers and families |
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Every Chinese EV on UK sale in one table — price, WLTP range, rapid charging and warranty.