Without requesting a recall, the US closes its investigation into Ford SUV exhaust odour

Without calling for a recall, the American government has ended its inquiry into complaints about exhaust odour problems in Ford Escape and Mercury Mariner SUVs.

The National Highway Traffic Safety Administration (NHTSA) did not disclose any additional information regarding its results and just claimed that the data did not support further action.

Following thousands of complaints from drivers who claimed exhaust stench was entering the interiors of their cars and, in some cases, causing headaches and nausea, a decision was made.

The NHTSA was unable to identify the issue's root cause or establish if this model-specific problem affected all vehicles in circulation.

The air conditioning system was previously reprogrammed as part of Ford's response to customer complaints,

and dealers were dispatched for additional examination where necessary.

It is comforting that the NHTSA investigated the identified issues before concluding their investigation without taking any further action, even though customers may still be dissatisfied.