loose gas cap warning · check engine light after filling up
The check engine light comes on shortly after refueling, often within a day or two, without any other noticeable symptom.
Check that the fuel cap clicks fully closed when tightened - this alone resolves this exact scenario a large share of the time.
Safe to drive. This is an emissions-related fault, not a safety one - but if the light persists after confirming the cap is tight, get an EVAP system check.
Describe your situation more precisely (e.g. exactly when it gets worse, how long it lasts) and get an expanded, personalized breakdown.
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Descriptions are for guidance only and do not replace a workshop inspection. If you are ever unsure whether it is safe to keep driving, pull over in a safe spot.
Fuel economy suddenly gets noticeably worse
InfoThe car needs noticeably more fuel to cover the same distance as before, without a clear change in driving habits.
Fuel nozzle keeps clicking off while refueling
InfoThe fuel pump nozzle repeatedly clicks off as if the tank is full, well before it should be, making it hard to fully refuel.
Grinding noise when braking
SeriousA harsh, metallic grinding or scraping sound that happens specifically when you press the brake pedal, often worse at low speed.
Squealing or squeaking noise when braking
WarningA high-pitched squeal, usually most noticeable on the first brake application of the day or at low speed.
