IsItAGoodCar
Reliability Guide

Common Problems with the
2025 BYD Sealion 7

The Sealion 7 introduced BYD's next-generation e-Platform 3.0 Evo architecture to the UK market. With up to 230kW rapid charging capability and up to 312 miles WLTP range on the 91.3kWh Excellence trim, it positioned BYD firmly in the competitive premium electric crossover segment.

What changed for 2025

  • •UK market introduction in early 2025
  • •e-Platform 3.0 Evo with 230kW peak charging
  • •Available in Comfort (RWD), Design (AWD), and Excellence (AWD) trims

Common MOT watch-outs

  • !New vehicle under manufacturer warranty; MOT not required for 3 years
  • !Verify software update campaign status with supplying dealer
4
Known Issues
0
Serious
0
Moderate
4
Minor

All Known Issues

Infotainment Interface & Menu Freezing

MinorElectrics & Electronics

The large 15.6-inch rotatable screen can experience occasional system sluggishness, random resets, or delayed climate control responses after cold boot.

Est. Repair Cost: £0 (OTA software update)
Warning Signs:

Touchscreen unresponsive for several seconds, Audio stream interruptions, Reverse camera display delayed when selecting reverse

What to Inspect:
  • Verify latest OTA update version
  • Test navigation and screen rotation functions
Verified by IsItAGoodCar Research Team

Sensitive Driver Monitoring & ADAS Alerts

MinorElectrics & Electronics

The steering wheel camera and forward sensing array can sound frequent audible chimes for driver fatigue or speed limit variations, causing annoyance on typical UK roads.

Est. Repair Cost: £0 (Calibration update)
Warning Signs:

Repeated fatigue reminder chimes, Over-eager speed limit audio warnings, Steering wheel nudge on narrow lanes

What to Inspect:
  • Check ADAS warning volume settings
  • Ensure windscreen camera area is clean
Verified by IsItAGoodCar Research Team

DC Rapid Charging Curve Drop-off

MinorElectrics & Electronics

While capable of high peak DC charging speeds, the charging curve can drop noticeably once battery charge passes 55–60% or when the battery has not been preconditioned.

Est. Repair Cost: £0 (Design trait)
Warning Signs:

Charging rate slows sooner than expected on ultra-rapid chargers, Longer charging stops in winter conditions

What to Inspect:
  • Verify battery preconditioning setting is enabled when navigating to rapid chargers
Verified by IsItAGoodCar Research Team

Accelerated Rear Tyre Wear (AWD)

MinorSuspension & Chassis

Dual-motor AWD models produce 523bhp, and frequent hard acceleration combined with a heavy curb weight can lead to rapid wear on rear tyres.

Est. Repair Cost: £350–£600 (pair of 20-inch tyres)
Warning Signs:

Low tread depth on rear tyres, Reduced wet traction under full throttle, Uneven inner shoulder wear

What to Inspect:
  • Measure tread depths across both front and rear axles
  • Check for signs of alignment scrub
Verified by IsItAGoodCar Research Team

Buying Tips for 2025 BYD Sealion 7

  • ✓Check that all driver-assist camera sensors are calibrated correctly
  • ✓Confirm whether the vehicle has the 82.5kWh or 91.3kWh battery pack depending on your range requirements
Check a 2025 BYD Sealion 7 by Registration