Does the BYD Seal suffer from major range loss during cold UK weather?

Yes, but this is a characteristic of its battery chemistry rather than a unique defect. The Seal uses BYD’s advanced Lithium Iron Phosphate (LFP) Blade Battery. While LFP batteries are incredibly durable and structurally safe, they are notably sensitive to low ambient temperatures.

The Fix: UK specs come equipped with a standard heat pump to minimize cabin heating efficiency losses. Drivers report that pre-conditioning the car while it is still plugged into a home wallbox drastically improves winter efficiency.

Winter Range Realities: While the RWD Design trim boasts an official 354-mile WLTP range, sustained motorway driving during a freezing UK winter (with the cabin heater running) typically drops the real-world range to 200–230 miles.

Cold Weather Charging: If the battery is cold, DC rapid charging speeds at public highway stations may initially drop below the advertised 150kW peak.