IsItAGoodCar
Reliability Guide

Common Problems with the
2024 BYD Seal U

The Seal U arrived in the UK in 2024 as BYD's first family SUV, available as a plug-in hybrid (DM-i) or pure electric. It was positioned as a practical, high-equipment alternative to established European SUVs, with competitive pricing and generous standard equipment. The DM-i version combines a 1.5-litre petrol engine with an electric motor for a claimed 62 miles of electric-only range.

What changed for 2024

  • •UK launch in 2024 with DM-i PHEV and pure electric options
  • •Choice of plug-in hybrid or full electric powertrains
  • •High specification levels including 360-degree camera and ADAS

Common MOT watch-outs

  • !No significant MOT risks on near-new vehicles
  • !Check suspension components for early wear on soft suspension setup
5
Known Issues
0
Serious
1
Moderate
4
Minor

All Known Issues

12V Auxiliary Battery Parasitic Drain

ModerateElectrics & Electronics

The 12V auxiliary battery can run flat when parked for extended periods due to online connectivity modules staying awake, leading to system startup failures.

Est. Repair Cost: £150–£250 (battery replacement)
Warning Signs:

Vehicle refuses to power on, Keyless entry non-functional, Warning alerts on instrument panel

What to Inspect:
  • Check 12V battery health status
  • Inquire if latest telematics power-management patch was applied
Verified by IsItAGoodCar Research Team

Wobbly Ride / Soft Suspension

MinorSuspension & Chassis

The suspension is very soft, leading to a "boaty" sensation on UK roads and occasional "crashing" over sharp potholes.

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

Floaty feeling at speed, Shuddering over potholes, Nose-dive under braking

What to Inspect:
  • Drive over various road surfaces to test comfort
  • Check for any unusual suspension knocks
Verified by IsItAGoodCar Research Team

Vague Steering Feedback

MinorSteering

The steering is very light and disconnected, providing little feedback to the driver about what the front wheels are doing.

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

Disconnected feel, Frequent small corrections needed on motorways, Lack of steering weight

What to Inspect:
  • Ensure steering mode is set to your preference (Sport/Normal)
  • Test at various speeds
Verified by IsItAGoodCar Research Team

Smart Home Charger Handshake Interruption

MinorElectrics & Electronics

Some owners report failed or prematurely stopped home charging sessions with certain UK smart chargepoints, showing "check charging equipment" until the vehicle software is refreshed.

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

Scheduled overnight charge fails to initiate, Check charging port error message, Charge session terminates after a few minutes

What to Inspect:
  • Confirm charging works on standard AC socket and public chargers
  • Check OBC firmware version
Verified by IsItAGoodCar Research Team

Climate Control & Heat Pump Lag

MinorCooling System

The heating and ventilation system can be slow to reach target temperatures in cold UK weather, particularly when driven in Eco mode.

Est. Repair Cost: £0 (Settings adjustment / firmware update)
Warning Signs:

Lukewarm air when heat requested, Slow demisting of front windscreen, Noisy heat pump compressor on startup

What to Inspect:
  • Test air conditioning and heating output in Normal/Sport mode
  • Check demister performance during test drive
Verified by IsItAGoodCar Research Team

Buying Tips for 2024 BYD Seal U

  • ✓The DM-i plug-in hybrid is likely to be more popular with UK buyers due to its flexibility
  • ✓Verify the smooth transition between EV and petrol modes on the DM-i during test drive
Check a 2024 BYD Seal U by Registration