⚠️ Volkswagen manufacturer position
Volkswagen Group ELSA requires draining via fuel cart before tank removal where needed. Misfuel damage is excluded from warranty. Follow anti-static and fire precautions in the Petroleum (Consolidation) Regulations 2014 workshop controls.
Vehicle information
| Make | Volkswagen |
|---|---|
| Model | Polo |
| Market status | Sold new in the UK — current and recent generations |
| Body styles | Hatchback |
| Generations | 6R (2009–2017), AW (2017–present) |
| Engine options | Petrol: 1.0 TSI, 1.0 MPI (legacy) Diesel: 1.4 TDI on older UK cars only — largely withdrawn |
| Fuel tank capacity | Approx. 45 L |
| Fuel system | TSI direct injection on current UK cars |
| Access method | Fuel pump/sender module access under rear seat (most hatchbacks/saloons) — consult ELSA for your bodystyle |
| Anti-siphon | Yes — filler-neck anti-siphon or capless (Easy Fuel) on many UK models; neck siphoning is not an ELSA procedure. |
| Service portal | VW Group erWin / ELSApro (authorised workshop subscription) |
Misfuel risk Moderate
Petrol-only Polo in the UK — wrong fuel is usually diesel in petrol. Risk rises if the engine is cranked, as diesel can enter the intake and exhaust aftertreatment.
If the engine was not started
Do not start the engine or turn the ignition to RUN. Do not drive. Arrange GBIFDA-certified drainage before contamination reaches the high-pressure pump. Keep receipts for contaminated fuel disposal (Environment Agency / SEPA / NRW / NIEA duty of care).
If the engine was started
If a diesel quantity was driven in a petrol engine, stop as soon as safe. Flush the tank, replace filters, and inspect spark plugs and catalytic converter for smoke or misfire; follow ELSA if OBD faults persist.
Access procedure
- Disconnect the 12 V battery negative terminal and ensure the ignition is OFF (avoid fuel pump priming on key-on).
- Relieve fuel system pressure per VW Group ELSA — open filler cap briefly only if the procedure allows.
- Remove rear seat cushion and access panel to reach the in-tank pump/sender module.
- Drain contaminated fuel through the approved module ports using a fuel cart; capture waste under COSHH and duty-of-care rules.
- Replace fuel filter(s) as specified; inspect seals on the pump module.
- Refill with the correct UK-grade fuel (petrol E10 or diesel to BS EN 590); prime the low-pressure circuit per ELSA.
- Reconnect battery, clear fault codes, and road-test after checking for leaks.
Related models
- T-Cross
- Ibiza
Frequently asked questions
What if I put diesel in my petrol Volkswagen Polo?
Do not start the engine. Diesel is heavier and can foul injectors or spark ignition systems once running. Fuel extraction and system flush per ELSA before restart.
How do I tell petrol and diesel nozzles apart on a Polo?
UK diesel nozzles are larger (≈25 mm) than petrol (≈21 mm). Green/black hose colours vary by forecourt — always read the pump label and your fuel flap sticker.
Is filler-neck siphoning allowed on VW Group cars?
No — anti-siphon and capless systems are common. ELSA prescribes pump-module or tank removal drainage, not neck extraction.
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