MG4 (2022–present) Fluids & Capacities
✓ Technically reviewed by Daniel Wei Chen — Senior Chinese Automotive Diagnostics & Repair Specialist, Sydney · 19 August 2026
The MG4’s fluids are few but very specific — including a detail that catches workshops out: the A/C refrigerant charge differs by ~80 g depending on whether your car has a heat pump (660±20 g with, 580±20 g without). Everything below is from the official owner’s manual, per variant.
Cooling circuits (OAT glycol)
| High-voltage battery pack | 4.0 L (all variants) |
| Electric-drive circuit | 5.6 L (2WD) · 6.4 L (4WD/XPower) |
E-drive transmission oil — Shell E-Fluids E6 iX (SL2808)
| Unit | Capacity |
|---|---|
| Rear drive, 125 & 150 kW motors | 0.85 L |
| Rear drive, 170 & 180 kW motors (XPower rear / 77 kWh) | 0.9 L |
| Front drive (XPower only) | 1.1 L |
Brake, washer & A/C
| Brake fluid | DOT 4 — 0.8 L |
| Washer fluid | 2.5 L |
| A/C refrigerant | R-1234yf — 580±20 g without heat pump / 660±20 g with heat pump. Check the under-bonnet label; regassing to the wrong charge degrades both cooling and winter heating. |
The 12V battery
Maintenance-free per the manual — but note MG’s own advice for cars parked over a month: disconnect the negative terminal, and put the car in READY mode ~30 minutes weekly otherwise. Low-use MG4s that ignore this are a known source of flat-12V callouts.
High-voltage boundary: checking coolant levels visually is fine; opening the battery-pack circuit or anything behind orange connectors is qualified-technician work only, and this site will never publish procedures for it.
Source: official MG4 owner’s manual (Middle-East edition), Technical Data p. 327 and Service & Maintenance pp. 293–294.
Disclaimer: Information on this page is general guidance only and does not replace the manufacturer’s official documentation or the judgement of a qualified technician. Last verified: 19 August 2026 · Next re-check: November 2026.