MG MG HS / MG EHS

Brake fluid capacity & service interval

MG MG HS / MG EHS requires brake fluid with a capacity range of 0,8 to 1 liter. Service intervals occur every 30000 miles or 24 months. The data covers 5 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
MG HS 1.5 GDI PHEV (226 kW) (2024- )
  • Use: Normal
  • Capacity 0,8 liter
MG HS 1.5 GDI PHEV (249 kW) (2024- )
  • Use: Normal
  • Capacity 0,8 liter
MG HS 1.5T GDI (125 kW) (2024- )
  • Use: Normal
  • Capacity 1 liter
MG EHS 1.5T GDI PHEV (190 kW) (2020-2024)
  • Use: Normal
  • Capacity 1 liter
  • Change 30000 miles/ 24 months
MG HS 1.5T GDI (124 kW) (2018-2024)
  • Use: Normal
  • Capacity 1 liter
  • Change 30000 miles/ 24 months

Additional Notes

  • The MG EHS 1.5T GDI PHEV (190 kW) and the MG HS 1.5T GDI (124 kW) both carry a 1-liter brake fluid capacity, while the two 2024 PHEV variants rated at 226 kW and 249 kW each specify a reduced capacity of 0.8 liter.
  • A 1-liter capacity in a hydraulic brake system generally reflects the combined volume of the master cylinder reservoir and the lines serving all four corners of the vehicle, which is a typical figure for a mid-size SUV platform.
  • The 0.8-liter figure on the 226 kW and 249 kW PHEV configurations is a noticeably smaller reservoir volume, consistent with brake-by-wire or electrohydraulic systems found in higher-output plug-in hybrid platforms where the hydraulic circuit is partially supplemented by electric actuation.
  • On the MG HS 1.5T GDI (124 kW) covering model years 2018-2024, the hydraulic system serves both the brake and clutch circuits, meaning the single 1-liter reservoir feeds two distinct hydraulic functions rather than brakes alone.
  • The 125 kW variant of the MG HS 1.5T GDI introduced from 2024 onward retains the same dual brake/clutch hydraulic system and the same 1-liter capacity as the earlier 124 kW version, indicating continuity in the hydraulic circuit design despite the power output revision.
  • A change interval of 30,000 miles or 24 months under normal use conditions is specified for the MG EHS 1.5T GDI PHEV (190 kW) and the MG HS 1.5T GDI (124 kW). The 24-month time limit reflects the hygroscopic nature of brake fluid, which absorbs moisture from the atmosphere over time and lowers its boiling point regardless of mileage accumulated.
  • The 30,000-mile threshold in the change interval means that whichever limit is reached first, distance or time, would govern the service point under normal use conditions for the configurations where an interval is listed.

Other Systems