Smell in the car? Get your car inspected at your home or office.

Our certified mechanics come to you · Backed by our 12-month, 12,000-mile warranty · Get a fair and transparent estimate upfront

GET A QUOTE Backed by 12-month, 12,000-mile guarantee

Smell in the car Inspection Service

In-car smells can indicate minor or major mechanical issues, depending on the nature of the smell, its location, and whether any fluid leaks or other symptoms are present.

Typically, smells originate from a fluid leak or malfunctioning component.

  • Fluid leaks: Fluid leaks are the most common source of unusual smells in a vehicle. Gasoline, oil, coolant, and other fluids can leak from ruptured hoses, lines, gaskets, and seals.

  • Malfunctioning components: Many components can cause fluids to leak if they break or rupture, but some components themselves can cause unusual odors if they stop working properly. For example, an overcharged battery produces excess heat that results in the battery putting off a strong scent of sulfur (like rotten eggs).

Common car smells:

Smells emanating from under the hood or under the vehicle often take on a specific, recurring odor. If your car is putting off one of the following scents, take note of it -- it’s likely your issue is one of those commonly associated with that particular smell.

  • Exhaust: Have the vehicle inspected as soon as possible. Carbon Monoxide (CO) is a major component of vehicle exhaust, and is often referred to as the “silent killer.” If exhaust fumes are present in the cabin, so is CO. CO can cause loss of consciousness, and prolonged exposure can cause death.

  • Gasoline: On modern automobiles, fuel odors should not be detectable at anytime beyond refueling. A strong smell of gasoline can indicate a leaking fuel supply component (fuel filler hose, filter, or lines) or an evaporative emissions component (purge valve, hoses, or canister). Have the vehicle inspected by a professional immediately.

  • Sweet (like maple syrup): When a sweet smell is detectable, the likely culprit is coolant. Coolant travels throughout the engine, radiator, various hoses, and the heater core, which is usually located under the dashboard. A coolant smell will usually be followed by an overheating condition, so a thorough visual inspection should be performed immediately. At no time should the radiator cap on a vehicle at operating temperature be removed, as hot coolant has the potential to cause serious injuries.

  • Sulfur (like a struck match): The most likely cause of a strong scent like rotten eggs is a catalytic converter being overwhelmed or reaching failure, but it could also be the result of an overcharged battery or fuel system issue. To avoid costly repairs, have the car inspected as soon as possible.

  • Burning wood or rubber: Overheating the brakes or tires can cause the car interior to smell of burnt rubber. A slipping or malfunctioning clutch can cause the interior to smell like burning wood. In both cases, letting the components cool off for a few minutes may solve the problem. If the smell persists, it may indicate a slipping clutch, or a brake component that is seized and in need of service.

  • Hot oil: As engine oil leaks from a failed gasket or seal, it typically lands on hot components and gives off a distinct smell. Small amounts of oil may neither leave traces on the floor nor be easily seen without a thorough inspection. It’s important to address the smell of oil even if no oil is actually visible.

  • Mildew or mold: Usually, a musty odor is indicative of buildup on the vehicle’s evaporator or a cabin air filter that is due for replacement (if the vehicle is so equipped). An inspection of the duct system will usually be required. If the vehicle has a cabin filter, a replacement may be necessary.

Common reasons for this to happen:

  • Fuel injector is bad
  • Fuel filter is bad
  • Fuel tank is leaking
  • Fuel pressure regulator is leaking
  • Fuel pump assembly failure
  • Broken fuel line
  • Catalytic converter failure
  • Overcharged battery
  • Cabin air filter is bad
  • Evaporator is plugged or dirty
  • Drain hole is plugged
  • Slipping or malfunctioning clutch
  • Failed engine gasket or seal
  • Heater core is leaking
  • Radiator hose is bad
  • Parking brake was left on while driving
  • Seized brake piston

What to expect:

A top-rated mobile mechanic will come to your home or office to determine the source and cause of the smell, and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.

How important is this service?

Many smells are the first indication of a potentially serious problem. If the smell you detect is not on the list, there may still be a problem requiring attention. The mechanic will be able to determine the severity of the issue during the inspection.

Fast and easy Smell in the car Inspection service at your home or office.

Backed by 12-month, 12,000-mile guarantee

People say the nicest things

Jason is knowledgable, reliable and friendly person. He took his time to explain things about my car. I highly recommend YourMechanic and Jason's service.

I have to be honest, this was the first time that, I have EVER felt 'at-ease' around an auto mechanic. Jonas was thorough and straight forward with me about the issues; gave me a quote directly after doing the diagnostics on the car and, as it turned out, it cost me less than the original estimate. When does that ever happen with auto repairs ?? He was friendly, informative and knowledgeable. You folks made the whole experience convenient and painless. I'm "sold" on the "Your Mechanic" concept. I'll probably never take my car again to a traditional mechanic !! Jonas was a pleasure to deal with !

Tom went above and beyond to make me as satisfied as I could be. His communication was excellent. Friendly and professional and best if all, my car is running great and he did it without unnecessary repairs. I would and will highly recommend Tom and Your Mechanic to everyone. Thanks, Rob Miller.

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 ·