blue-gray smoke exhaust · burning oil smoke
A bluish or blue-gray tinted smoke from the exhaust, often accompanied by a burning oil smell.
Check the engine oil level and how quickly it drops between top-ups - a car burning oil will need refills more often than expected.
Generally driveable short-term, but keep a close eye on the oil level - running the engine low on oil can cause severe damage.
Describe your situation more precisely (e.g. exactly when it gets worse, how long it lasts) and get an expanded, personalized breakdown.
Find a trusted auto repair shop near you and book a diagnostic visit online in minutes.
Find a repair shopRun a shop? The OBD decoder, fuse box diagrams and parts catalog are built into the Motoro dashboard. See Motoro for workshops
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.
Thick white smoke from the exhaust
SeriousThick, persistent white smoke (often with a sweet smell) coming from the exhaust, especially if it does not go away as the engine warms up.
Black smoke from the exhaust
InfoDark black or sooty smoke coming from the exhaust, usually noticeable when accelerating.
Rattling noise from underneath the car
InfoA metallic rattling or buzzing noise from underneath the car, often changing with engine RPM or road vibration.
Backfiring or popping sounds from the exhaust
WarningLoud popping or banging sounds from the exhaust, often when letting off the gas or during deceleration, sometimes with a visible flash.
