MG4 Electric Battery: Complete Guide
The MG4 Electric battery is available in 64 kWh (Premium Long Range) and 77 kWh (Premium Extended Range) — both NMC lithium-ion on SAIC’s purpose-built MSP (Modular Scalable Platform). The 64 kWh delivers up to 280 miles WLTP; the 77 kWh reaches 338 miles WLTP. DC fast charging peaks at 144–154 kW, completing 10–80% in approximately 25–40 minutes. The 2026 facelift brings a substantially improved interior, physical climate control buttons, and a new 12.8-inch touchscreen. The MG4 remains one of Europe’s best-value electric hatchbacks — starting from under £30,000 after streamlining to two main battery options.
MG4 Electric Battery: 2026 Facelift Specs
| Variant | Battery | Usable | WLTP Range | Motor | 0–62 mph | DC Rate | 10–80% |
|---|---|---|---|---|---|---|---|
| Premium Long Range (RWD) | 64 kWh NMC | ~61.7 kWh | 280 miles | 188 hp (140 kW) | 7.5 sec | 144 kW | ~25 min |
| Premium Extended Range (RWD) | 77 kWh NMC | ~74 kWh | 338 miles | 241 hp (178 kW) | 6.2 sec | 154 kW | ~35–40 min |
| XPower (AWD) | 64 kWh NMC | ~61.7 kWh | 251 miles | 435 hp (324 kW) | 3.8 sec | 144 kW | ~25 min |
The MSP Platform: Purpose-Built for EVs
The MG4 uses SAIC’s Modular Scalable Platform (MSP) — a ground-up EV architecture that enables a flat floor and rear-wheel-drive layout. This platform delivers excellent weight distribution — the MG4 achieves near-perfect 50:50 weight balance front to rear. The rear-wheel-drive configuration is unusual in this price class — most rivals use front-wheel drive. The result is driving dynamics that punched well above the MG4’s price tag when it launched in 2022.
The MSP’s ultra-thin battery design allows the 77 kWh NMC pack to fit within a compact hatchback floor. The battery actively liquid-cools all cells. The 50:50 weight distribution and low centre of gravity combine to give the MG4 a distinctly sporty character — praised in back-to-back tests against the VW ID.3 and Renault Mégane E-Tech. The XPower AWD variant takes this further — dual motors producing 435 hp in a compact hatchback body, reaching 62 mph in 3.8 seconds.
2026 Facelift: Interior Finally Matches the Drivetrain
The original MG4’s interior was widely criticised as cheap-feeling relative to its competitive price. The 2026 facelift addresses this comprehensively — soft-touch materials now cover the dashboard and doors. A new full-height centre console adds a wireless charging pad, cupholders, and gear dial. Physical climate control buttons sit below the new 12.8-inch touchscreen — the most common buyer complaint in the original car is resolved.
MG4 Charging Speeds
| Method | Power | 64 kWh (61.7 usable) | 77 kWh (~74 usable) |
|---|---|---|---|
| Level 2 (7 kW) | 7 kW | ~9.5 hours full | ~11.5 hours full |
| Level 2 (11 kW) | 11 kW | ~6 hours full | ~7.5 hours full |
| DC Fast | 144 / 154 kW | ~25 min (10–80%) | ~35–40 min (10–80%) |
Real-World Range
- 64 kWh, warm weather mixed driving: Approximately 240 miles at 3.9 miles/kWh — Carwow’s real-world test figure during 2026 facelift evaluation
- 77 kWh, warm weather: Approximately 280–300 miles in mild conditions — Carwow’s testing returned 3.9–4.4 miles/kWh overall
- Cold weather (winter): Approximately 3.1 miles/kWh in cold conditions — real-world range drops to approximately 190–230 miles depending on battery size
- XPower (64 kWh AWD, 3.8 sec): Approximately 200–225 miles real-world — dual-motor performance mode draws significantly more energy
The MG4 Urban: A New Affordable Entry Point
A new MG4 Urban launched in Europe in early 2026 — using 43 kWh and 54 kWh LFP batteries from REPT Battero. Starting from under £22,000 after the Government’s EV Grant, the Urban targets urban commuters who don’t need the MG4’s full range. The Urban uses LFP chemistry — supporting daily 100% charging without degradation concern. The main MG4’s NMC 64/77 kWh lineup targets buyers who need longer range and faster highway charging.
Battery Warranty and Reliability Note
MG covers the MG4 battery with a 7-year / 80,000-mile warranty — the vehicle warranty matches the battery coverage at 7 years. This is better than most competitors’ 3-year vehicle warranties. Important note: MG finished last in Auto Express’s 2025 Driver Power reliability survey for the second consecutive year. Prospective buyers should weigh the strong warranty against this reliability feedback and factor in MG’s growing UK dealer network for support. Annual NMC degradation is approximately 2–2.5% per year based on first-generation owner data.
MG4 vs Competitors: Value Electric Hatchback Comparison
| Model | Battery (Usable) | WLTP Range | DC Rate | Starting Price (UK) |
|---|---|---|---|---|
| MG4 Premium Long Range (64 kWh) | ~61.7 kWh NMC | 280 miles | 144 kW | ~£28,495 (after £1,500 discount) |
| VW ID.3 Pro S (58 kWh) | 58 kWh NMC | ~265 miles | 183 kW | ~£36,000 |
| Renault Mégane E-Tech (60 kWh) | 60 kWh NMC | 280 miles | 130 kW | ~£35,000 |
| BYD Seal (61.4 kWh) | ~58 kWh LFP | 354 miles | 150 kW | ~£38,000 |
Charging Tips for MG4 Electric Owners
- Set daily charge to 80%: NMC benefits significantly — 80% of 61.7 kWh usable provides ~49 kWh covering 190+ miles daily without stressing cells
- Use MG iSMART app for preconditioning: The MG app schedules charging and activates battery preconditioning for DC fast charging — use it before any public DC charging session in cold weather
- Consider the 77 kWh for road trips: The 338-mile WLTP Extended Range model covers significantly more distance between stops — worth the premium if you regularly drive 200+ miles in a single day
- Annual servicing reminder: The MG4 requires annual servicing (vs 2-year intervals on some rivals) — factor this into total cost of ownership when comparing with ID.3 or Kia EV3
Conclusion
The MG4 Electric battery delivers 64 or 77 kWh NMC in Europe’s most compelling value electric hatchback. The 2026 facelift’s improved interior, physical buttons, and streamlined lineup make the MG4 a more complete ownership proposition. The rear-wheel-drive MSP platform’s 50:50 weight distribution and 435 hp XPower option set it apart dynamically at the price. The 7-year warranty is generous; the reliability survey results are an honest counterpoint to consider. At under £30,000 for a 280-mile-WLTP rear-drive electric hatchback, the MG4 remains one of the most difficult value propositions to dismiss in 2026.
