IsItAGoodCar
Reliability Guide

Common Problems with the
2024–2026 MG HS Mk2

We've identified 3 known issues that can affect the 2024–2026 MG HS Mk2. None are considered critical, but they're worth knowing about before you buy.

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 2024–2026 MG HS Mk2

  • ✓On HS PHEV models, verify EV mode engagement and test AC charging on a 7kW home wallbox.
  • ✓Test the dual 12.3-inch screens for quick boot times, responsive climate slider adjustments, and phone mirroring stability.
  • ✓Check the 7-speed dual-clutch transmission on petrol models for smooth low-speed crawling in heavy traffic.
Check a 2024–2026 MG HS Mk2 by Registration