Symptom
It failed its emissions test
A failed emissions/inspection test result on its own is not a drivability symptom, but it confirms the engine computer has detected an…
SeverityModerate
Symptoms
Symptom
It is using more fuel than it used to
A noticeable drop in fuel economy compared to the vehicle's normal average, without another obvious symptom — this is a broad signal…
SeverityLow
Symptom
A gurgling noise from behind the dashboard
A gurgling sound from behind the dash, especially after shutting off the engine, usually means air trapped in the cooling system rather…
SeverityLow
Symptom
The coolant has changed colour
Coolant that has turned rusty brown, milky, or otherwise changed from its original color usually signals internal contamination or degradation, not just…
SeverityModerate
Symptom
The heater blows cold
The cabin heater is not producing warm air, or takes an unusually long time to warm up — this is most often…
SeverityLow
Symptom
The brake pedal sinks slowly while I hold it
The brake pedal gradually sinks toward the floor while stopped with steady pressure applied — this points to fluid or pressure bypassing…
SeverityCritical
Symptom
The coolant keeps going down with no visible leak
Coolant level drops steadily but there is no puddle, wet spot, or visible external leak — this points toward an internal leak…
SeverityHigh
Symptom
It is using a lot of oil
Needing to add oil noticeably between scheduled changes, without a visible external leak, points to internal oil consumption — burning oil in…
SeverityModerate
Symptom
The engine oil looks milky
A milky, mayonnaise-like appearance on the oil cap or dipstick means coolant is mixing with the engine oil — a serious internal…
SeverityHigh
Symptom
The accelerator pedal stuck
The accelerator pedal physically sticks or fails to return to idle position — a floor mat, worn cable, or throttle-body fault can…
SeverityCritical