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MG4 Standard Range 51 kWh LFP, 170 hp (2022-present) engine: faults and reliability

MG eléctricos: MG4 (plataforma MSP, baterías de 51 a 77 kWh), ZS EV (44,5 a 72,6 kWh) and Marvel R (70 kWh) version

With caution

What Car? places the MG4 among the less reliable electric cars in its UK survey, mainly for minor electrical faults; for the 51 kWh version no specific battery or motor faults are documented.[1]

Years
since 2022
Power
170 hp
Faults that affect it
1
0 of high or critical severity
Cars that use it
1
in our database

4 sourcesHow we work

What changes in this version

CATL LFP battery of 51 kWh (50.8 kWh usable) and a 125 kW permanent-magnet synchronous motor on the rear axle, with 250 N·m and fast charging of up to 88 kW.[2][3]

Faults of the MG4 Standard Range 51 kWh LFP, 170 hp (2022-present) engine

The documented engine faults that affect this version and its years, from most to least important.

  1. 1Medium severityFrequency: OccasionalChargingCharging faults: on-board charger and interrupted chargingOn the MG4, ZS EV and Marvel R there are owners who see AC charging rejected or interrupted; fiches-auto attributes it to the on-board charger or its software. It is an occasional issue, not a systemic one.

Cars fitted with the MG4 Standard Range 51 kWh LFP, 170 hp (2022-present) engine

Open each car to see all its faults with this engine and what to check before buying it.

MG

  • MG MG4MG4 Electric Standard Range 51 kWh · MG4 Electric Long Range 64 kWh · MG4 Electric Extended Range 77 kWh · MG4 XPowersince 2022[2][4]

Frequently asked questions

Is the MG4 Standard Range 51 kWh LFP, 170 hp (2022-present) engine reliable?

Our verdict is “With caution”. What Car? places the MG4 among the less reliable electric cars in its UK survey, mainly for minor electrical faults; for the 51 kWh version no specific battery or motor faults are documented.[1]

What faults does the MG4 Standard Range 51 kWh LFP, 170 hp (2022-present) engine have?

The documented ones that affect this version, by importance: charging faults: on-board charger and interrupted charging (medium severity).

Which cars use the MG4 Standard Range 51 kWh LFP, 170 hp (2022-present) engine?

MG MG4 (since 2022).[2][4]

Are you buying a car with the MG4 Standard Range 51 kWh LFP, 170 hp (2022-present) engine?

We will put you in touch with a partner only if you authorise it in the form.

Do you have a car with this engine? Tell us which faults you have had and at how many kilometres. Report your fault.

Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. Used MG4 2022-present reliabilityWhat Car? · Reliability study · consulted 30 October 2026
  2. MG4 EVWikipedia · Other source · consulted 30 October 2026
  3. Opiniones del MG4 Urban: uno de los coches eléctricos más interesantes, pero con defectosAutopista · Motoring press · published 22 September 2026 · consulted 30 October 2026 · in Spanish
  4. Datos generales MG MG4 Electric Luxury (05/23 - 07/25)ADAC · Technical documentation · consulted 30 October 2026 · in German