The EPA has concluded its inquiry into the Ford SUV exhaust odour and decided not to request a recall.

The Ford Escape and Mercury Mariner SUVs have been the subject of complaints about exhaust odour,

but the US government has concluded its investigation and decided against calling for a recall.

The National Highway Traffic Safety Administration (NHTSA) examined the evidence and came to the conclusion that no additional action was required but made no further justifications.

Thousands of motorists reported that exhaust smell was leaking into their vehicles and giving them headaches and nausea.

These complaints led to the decision that was taken.

The National Highway Traffic Safety Administration was unable to identify the source of the issue or whether it was specific to a certain model of car.

To address consumer complaints, Ford had already taken action by reprograming the air conditioning system and dispatching dealers for additional examination as needed.