Petrol and diesel drivers decrease vehicle fuel efficiency by ignoring a common smell
Stay one step ahead of a loss in fuel economy by identifying a smell that many drivers encounter.
Motoring experts have explained a common car smell you shouldn’t ignore so you can optimise your vehicle’s fuel efficiency and avoid expensive trips to the service garage.
Identifying the many different smells cars produce could make or break your ability to stay safe behind the wheel and dodge more expensive future repairs.
Driving enthusiasts at GM Parts Direct note that a rotten egg scent often indicates a fuel system issue from problems like a failing catalytic converter.
A malfunctioning catalytic converter can result in unprocessed hydrogen sulphide escaping into the exhaust, reducing engine performance, in turn lowering fuel efficiency.
Broken catalytic converters can also create more pollution and damage other components within your car.
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These components include a vehicle's exhaust system, control modules, and oxygen sensors.
An oxygen sensor helps a car’s computer properly calibrate the air-fuel mixture.
Inefficient combustion due to a broken oxygen sensor can lead to a car’s computer receiving inaccurate information, decreasing fuel economy.
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GM Parts Direct has cited a recent 200 per cent online search increase for “car smells like eggs.”
The smell typically comes from a car’s exhaust and is also described as a sulphur-like scent.
According to the Department of Energy: “Fixing a serious maintenance problem, such as a faulty oxygen sensor, can improve mileage by as much as 40 per cent.”