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Ford prescribes fuel module service via access panel on Mustang. Misfuel excluded from warranty.

Vehicle information

MakeFord
ModelMustang
Market statusSold new in the UK (official RHD imports) — 2015–present
Body styles2-door coupe and convertible
GenerationsS550 (2015–2023), S650 (2024–present UK)
Engine optionsPetrol: 2.3L EcoBoost and 5.0L V8 petrol (UK official imports)
Fuel tank capacityApproximately 61 litres
Fuel systemDirect injection EcoBoost; port injection on V8 — high-flow in-tank pump
Access methodFuel pump access panel — location per S550/S650 workshop manual
Anti-siphonYes
Service portalFord ETIS

Misfuel risk Low

Petrol only — diesel nozzle should not fit. Risk is contaminated petrol or E10 compatibility concerns.

If the engine was not started

Drain tank if wrong or contaminated petrol added.

If the engine was started

Inspect injectors and knock sensors if poor-quality fuel was burned.

Access procedure

  1. Relieve pressure; disconnect battery
  2. Access pump module per Ford ETIS
  3. Drain contaminated petrol
  4. Inspect lines; reinstall with new seal
  5. Use minimum octane per handbook before return

Notes

Related models

Frequently asked questions

Is the UK Mustang diesel?

No — petrol EcoBoost and V8 only through official UK channels.

What octane does Mustang need?

Follow UK handbook — typically 95 RON minimum; higher for performance variants.

Can GBIFDA Method A apply?

Yes where Ford specifies pump module access rather than full tank drop.

Warranty and misfuel?

Excluded as improper fuel.

Need professional misfuel recovery?

Find a certified operator or read consumer guidance for your next steps.

Find an operator Consumer guidance

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