IsItAGoodCar
Reliability Guide

Common Problems with the
2024 MG HS Mk2

Unveiled at Goodwood in July 2024, the second-generation HS (AS33) arrived with a 170PS 1.5-litre turbo petrol and a standout 24.7kWh PHEV offering up to 75 miles of EV range in SE and Trophy trims.

What changed for 2024

  • •Second-generation redesign on Roewe RX5 platform with extended 2,765mm wheelbase
  • •1.5-litre turbo petrol engine (170PS) with 6-speed manual or 7-speed wet dual-clutch gearbox
  • •PHEV variant equipped with 24.7kWh battery offering class-leading 75-mile official EV range
  • •Revamped dashboard incorporating twin 12.3-inch screens for driver display and infotainment

Common MOT watch-outs

  • !Front tyre edge scrub caused by curb-heavy suburban parking and increased vehicle kerb weight
  • !Rear brake disc surface corrosion on PHEV models due to habitual regenerative braking deceleration
  • !LED headlamp levelling and aim errors following front bumper contact during tight parking
3
Known Issues
0
Serious
2
Moderate
1
Minor

All Known Issues

PHEV High-Voltage Battery Thermal Management Valve Seepage

ModerateCooling System

On HS PHEV models with the large 24.7kWh battery pack, the high-voltage battery cooling circuit diverter valve can develop slight weepage at the hose union clamps under high thermal loads.

Est. Repair Cost: £0 (Warranty / hose clamp tightening)
Warning Signs:

Low coolant warning message on digital cluster, Traces of blue/green hybrid coolant residue under undertray, PHEV EV mode temporarily restricted

What to Inspect:
  • Inspect secondary hybrid coolant expansion tank level under bonnet
  • Check underside of battery pack for coolant staining
Verified by IsItAGoodCar Research TeamUpdated

7-Speed DCT Low-Speed Roundabout Roll-On Hesitation

ModerateGearbox & Transmission

On 1.5 Turbo petrol variants with the 7-speed dual-clutch transmission, decelerating to 5mph for a roundabout followed by sudden throttle application can cause a 1-second clutch slip and hesitation.

Est. Repair Cost: £0 (Software TCM calibration update)
Warning Signs:

Engine revs flare briefly without vehicle accelerating when rolling into roundabouts, Clunky 2nd-to-1st downshift when braking to a halt

What to Inspect:
  • Test drive in suburban traffic with repeated rolling stops
  • Ask dealer if latest transmission software adaptation has been performed
Verified by IsItAGoodCar Research TeamUpdated

Dual 12.3-inch Screen Touchscreen Boot-Up Lag & Climate Control Latency

MinorInterior & Trim

Because physical climate buttons have been integrated into the digital touchscreen, boot-up lag during cold starts can delay defroster and cabin temperature adjustment by up to 20 seconds.

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

Screen takes 15–20 seconds to boot on cold start, Climate control slider bar takes multiple taps to respond, Apple CarPlay disconnects when selecting reverse camera

What to Inspect:
  • Start car from cold and test rapid heater and fan speed adjustments immediately
  • Check for latest infotainment firmware
Verified by IsItAGoodCar Research TeamUpdated

Buying Tips for 2024 MG HS Mk2

  • On PHEV models, verify EV mode engagement and inspect the 24.7kWh battery cooling hose unions for leaks
  • Test the cold boot speed of the twin 12.3-inch screens and verify immediate heater response via touch slider
  • Check low-speed crawl smoothness on 7-speed DCT models when rolling into roundabouts to ensure no clutch lag
2025
Check a 2024 MG HS Mk2 by Registration