Hybrid battery ageing
usually 220,000–350,000 km · Medium risk
Signs: Reduced electric assist
Fix: Recondition or replace
€1,500–3,500
Common faults, service intervals and costs
MG3
2024–now
1
engines covered
1
known faults
1
official recalls
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
The MG3 has been built since 2024.
For this generation we cover 1 engines and 1 known faults, each with the mileage range where it usually appears.
The most expensive known risk is Hybrid battery ageing: it usually appears at 220,000–350,000 km and costs €1,500–3,500 to fix.
Engines
| Engine | Fuel | Timing drive | Oil |
|---|---|---|---|
| Hybrid | Hybrid | Check manual | — |
Faults by engine
Hybrid
Scheduled service
Intervals and typical prices for the Hybrid engine. Other engines differ in oil, timing drive and some filters; the app gives the exact plan.
| Item | Interval | Typical price |
|---|---|---|
| Inverter coolantHybrid system | every 160,000 km or every 120 months | €80–160 |
| Engine oil + oil filterEngine | every 15,000 km or every 12 months | €70–150 |
| Cabin (pollen) filterClimate | every 15,000 km or every 12 months | €15–40 |
| Brake fluidBrakes | every 24 months | €50–95 |
| A/C service (regas + desiccant)Climate | every 24 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Spark plugsIgnition | every 60,000 km or every 48 months | €50–160 |
| Hybrid battery cooling filter cleanHybrid system | every 30,000 km | €0–40 |
| Hybrid transaxle fluidTransmission | every 100,000 km | €80–160 |
| Auxiliary (serpentine) beltEngine | every 120,000 km | €70–180 |
| Coolant replacementCooling | every 150,000 km or every 96 months | €70–150 |
| Brake pads (regen-assisted)Brakes | usually at 80,000–160,000 km | €60–150 |
| Tyres (set of 4)Wheels | usually at 40,000–60,000 km | €320–700 |
| Wiper bladesBody | checked at service | €20–50 |
| 12V batteryElectrical | checked at service | €100–220 |
Most common engine versions in the EU
New cars of this generation registered in the EU, Iceland and Norway 2010–2025: 68,597, of which 112 in Croatia. The share shows how common each version is.
| Version | Share | Years | CO₂ | Fuel use |
|---|---|---|---|---|
| 1.5 Hybrid1.5 (1,498 cm³) · 75 kW (102 hp) · Hybrid | 80.7 % | 2024–2025 | 100 g/km | 4.4 L |
| 1.5 Petrol1.5 (1,495 cm³) · 85 kW (116 hp) · Petrol | 18.5 % | 2025–2025 | 137 g/km | 6.1 L |
Source: European Environment Agency (EEA), monitoring of CO₂ emissions from new passenger cars, CC BY 4.0. CO₂ and fuel use are official type-approval values (WLTP from 2021), not real-world consumption.
Official recalls
Recalls the manufacturer published in the United Kingdom for this model (1). The same recalls usually apply across Europe. Ask an authorised dealer to check by VIN whether your car is affected and whether the work has been done.
- Doors / locks / lids Possibility for front seat to delatch in a front collision.17/11/2025 · R/2025/434
Common questions
What are the known problems with the MG3?
The faults with the highest risk: hybrid battery ageing (220,000–350,000 km, €1,500–3,500). The full list by engine is on this page.
What should you check when buying a used MG3?
Before you buy, ask an authorised dealer to check by VIN that the recalls have been done (1 have been published for this model). On the test drive, watch for these signs: reduced electric assist. The full checklist is in the guide to buying a used car.
Other generations
Other MG models
Sources and notes
Faults, intervals and prices are indicative and collected from public sources and owner experience; always rely on the service book and a qualified workshop. Test statistics: DVSA – Anonymised MOT tests and results, Open Government Licence v3.0. Dutch tests: RDW Open Data (CC0). Engine versions: EEA, monitoring of CO₂ emissions from new passenger cars (CC BY 4.0, DG CLIMA). Owner complaints: NHTSA ODI (public domain). Recalls: DVSA Vehicle Safety Branch Recalls Database, OGL v3.0. Brand and model names are trademarks of their owners and are used only to describe the vehicles.
Updated 08/10/2026