MG HS Mk2 Common Problems & Reliability
The second-generation MG HS (model code AS33) launched in late 2024 as a substantially larger, more sophisticated family SUV designed to take on the Nissan Qashqai and Kia Sportage. Sharing its platform with the Roewe RX5, it features a longer wheelbase, sharper styling, and a vastly upgraded interior anchored by dual 12.3-inch high-definition screens. Powertrains include an updated 1.5-litre turbocharged petrol (170PS) paired with a six-speed manual or seven-speed dual-clutch transmission, and an exceptional Plug-in Hybrid (PHEV) featuring an oversized 24.7kWh battery that delivers an official pure-electric range of up to 75 miles. In 2025, a 221bhp self-charging Hybrid+ variant joined the range. Trims follow MG's value-driven SE and Trophy tiers, both generously equipped with comprehensive driver aids, 360-degree cameras, and MG's seven-year warranty. It stands out as one of the most spacious and cost-effective mid-sized family SUVs in Britain.
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Detailed fault breakdown, symptoms, and estimated repair bills by production year.
Most Common MG HS Mk2 Faults & Repair Costs
Dual 12.3-inch Screen Touchscreen Boot-Up Lag & Climate Control Latency
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.
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
- Start car from cold and test rapid heater and fan speed adjustments immediately
- Check for latest infotainment firmware
PHEV High-Voltage Battery Thermal Management Valve Seepage
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.
Low coolant warning message on digital cluster, Traces of blue/green hybrid coolant residue under undertray, PHEV EV mode temporarily restricted
- Inspect secondary hybrid coolant expansion tank level under bonnet
- Check underside of battery pack for coolant staining
7-Speed DCT Low-Speed Roundabout Roll-On Hesitation
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.
Engine revs flare briefly without vehicle accelerating when rolling into roundabouts, Clunky 2nd-to-1st downshift when braking to a halt
- Test drive in suburban traffic with repeated rolling stops
- Ask dealer if latest transmission software adaptation has been performed
Buying a used MG HS Mk2? Always check for hidden finance and write-off history.
Mechanical problems are only half the battle. Over 1 in 3 UK used cars checked have unpaid finance or accident write-off records that could cause you to lose the car or thousands in value.