⚠️ MG manufacturer position
MG specifies in-tank pump access from interior on MG3. Incorrect fuel not covered by warranty.
Vehicle information
| Make | MG |
|---|---|
| Model | MG3 |
| Market status | Sold new in the UK — 2013–present (hybrid from 2024) |
| Body styles | 5-door hatchback |
| Generations | Second generation UK (2024 hybrid alongside petrol) |
| Engine options | Petrol: 1.5L petrol; newer hybrid pairs petrol with electric motor Hybrid: MG3 Hybrid+ (petrol hybrid UK) |
| Fuel tank capacity | Approximately 45 litres |
| Fuel system | Petrol injection; hybrid retains petrol tank |
| Access method | Rear seat / floor access panel — Method A style on MG3 |
| Anti-siphon | Yes |
| Service portal | MG Motor UK dealer technical support |
Misfuel risk Low
Petrol and hybrid only in UK — diesel misfuel not applicable on current UK line-up.
If the engine was not started
extract fuel before crank.
If the engine was started
Check injectors and fuel rail for contamination damage.
Access procedure
- Hybrid: ensure propulsion off; disconnect 12 V battery
- Relieve pressure; open interior access to pump
- Drain tank; replace filter if contaminated
- Reinstall module with new O-ring
Frequently asked questions
Is the MG3 diesel?
UK new MG3 is petrol or hybrid — not diesel.
What if I put the wrong petrol grade in?
Use the grade in the handbook; severe contamination or water may still require tank fuel extraction.
How do GBIFDA technicians access the MG3 tank?
Typically via interior fuel module access per MG workshop manual.
Will MG pay for misfuel under warranty?
No.
Need professional misfuel recovery?
Find a certified operator or read consumer guidance for your next steps.
Find an operator Consumer guidance