BYD Sealion 7 review: the Chinese EV that out-specs the Tesla Model Y — and the one number that lets Tesla win

Five hundred and thirty horsepower, a 0–62mph time of 4.5 seconds and a sub-£50,000 price tag — on the spec sheet, the BYD Sealion 7 reads like a car that should frighten Tesla into a corner. The reality, after the numbers settle, is more interesting than that, and a good deal more awkward for BYD. When the company confirmed UK pricing and specifications for its Model Y rival, it priced the Sealion 7 from £44,990, and in 2026 that figure still sits right on top of the car it so plainly wants to beat. That single decision tells you everything about BYD’s ambitions, and it’s where my reservations begin.

What £44,990 actually buys you

The Sealion 7 lands in three trims, and the gaps between them matter more than usual. The entry Comfort is rear-wheel drive only, starting at £44,990, carrying an 82.5kWh battery and a single 230kW motor — good for 0–62mph in 6.7 seconds and a WLTP range of up to 300 miles. Step up to the Design AWD at £49,290 and you keep the same 82.5kWh pack but gain a second 160kW motor on the front axle, which lifts combined output to 390kW (around 530hp) and drops the sprint to 4.5 seconds. The trade-off is range: all-wheel drive pulls the WLTP figure down to 283 miles.

The one I’d actually look hardest at is the Excellence AWD at £57,290. It’s the only version with the bigger 91.3kWh battery, which buys back the range the second motor costs you — up to 312 miles WLTP — and it’s the only trim that charges at the full 230kW on DC rapid, trimming a 10–80% top-up to a claimed 24 minutes against 32 minutes for the cheaper cars. Every Sealion 7 tops out at 134mph and takes 11kW AC charging at home. The body is substantial too: at 4,830mm long on a 2,930mm wheelbase, this is a proper mid-size SUV, not a jacked-up hatchback wearing the badge.

The Tesla problem BYD created for itself

Here’s the tension at the heart of this car. BYD has aimed the Sealion 7 squarely at the Tesla Model Y and then priced it to match almost to the pound. So the comparison isn’t a sideshow — it’s the entire pitch. And on the numbers, it’s closer than BYD would like. When Carwow ran the two head-to-head, the dual-motor Sealion 7 brought 530hp and 690Nm to the Model Y’s 507hp and 494Nm — more muscle on paper, both quoting 4.5 seconds to 60mph. But the Tesla is the lighter car, it claims a longer range at 353 miles against the BYD’s 312, and it’s the more efficient of the two, which is the figure that actually shows up on your electricity bill every month.

BYD has built a car that out-specs the Model Y on a showroom poster and loses to it on the spreadsheet that matters — efficiency, the number you pay for every single mile.

That’s the BYD paradox in one line. The Sealion 7 gives you more power, more standard kit and a longer warranty for the same outlay, but the things that define living with an EV — how far it really goes, how cheaply it sips electrons — still favour the incumbent. Efficiency is unglamorous, and it’s exactly where Tesla has spent a decade quietly winning.

Where the Sealion 7 genuinely lands punches

I don’t want to undersell what BYD has done here, because in two areas it comfortably beats Tesla. The first is the cabin. This is a richer-feeling interior than the famously austere Model Y — a 10.25-inch driver display, a 15.6-inch rotating central screen that keeps Apple CarPlay and Android Auto (something Tesla still refuses to offer), dual wireless charging pads and the option of Nappa leather. If you’ve sat in a Model Y and found it a touch cold and phone-dependent, the Sealion 7 will feel like the more grown-up, more lavish place to spend an hour in traffic.

The second is peace of mind. BYD covers the Sealion 7 with a six-year vehicle warranty and eight years on the battery and motor. Tesla’s cover is shorter on the car itself, and for a buyer handing over the best part of £50,000 to a brand that was an unknown quantity on British driveways three years ago, that extra protection is worth real money — both in reassurance and at resale.

The bits that would stop me signing

Two things give me pause, and neither is the badge. The first is efficiency, which I keep returning to because it’s the quiet tax you pay for the life of the car. A heavier, less efficient EV costs you more at every public rapid charger and every home top-up, and over three or four years of ownership that gap compounds into a number you’d notice. The second is the driving experience. The reviews that have spent proper time with the Sealion 7 are warm about the value and the equipment, but consistent in saying it isn’t as resolved to drive as the price-equivalent rivals — the ride and the way it handles its considerable weight don’t yet match the polish of the cars BYD has chosen to line up against. Raw acceleration, the Sealion 7 has in spades. The finesse between the corners is where the years of development show, and BYD is still catching up.

There’s a strategic point buried in here too. By pricing level with the Model Y rather than undercutting it, BYD has denied itself the one argument that wins British driveways fastest: cheaper. The Sealion 7 isn’t the value play the headline power figures imply — it’s a like-for-like alternative asking to be judged on equal terms. That’s a bold place to plant your flag for a brand still building its name here, and it puts all the weight on the car being better, not cheaper.

The buyer I’d send to the BYD showroom

So who’s this for? If your priority is the lowest running costs and the longest real-world range, the Model Y still does the unglamorous maths better, and I’d point you there without much hand-wringing. But if you’ve cooled on Tesla — the politics, the spartan cabin, the missing CarPlay — and you want a genuinely plush interior, a fistful of standard kit and a warranty that outlasts the rivals, the Sealion 7 is the most credible reason yet to walk past a Tesla showroom. I’d skip the rear-drive Comfort and stretch to the Excellence AWD: it’s the only trim with the range, the rapid-charging and the performance to justify itself against the car BYD keeps inviting the comparison with. Buy it for the cabin and the cover, not the spreadsheet — and go in knowing exactly which battle you’re choosing to win.