What are the best cars for filtering fumes for asthma suffers?

My wife has asthma and exhaust fumes are a real problem, especially in traffic jams. What are the best cars for filtering fumes or preventing them from getting into the cabin?

Asked on 28 November 2018 by Patrick Waller

Answered by Honest John
It's really a matter of regularly replacing the pollen filter (every six months). Just about every car has an air-recirculate switch that does not admit air from outside.
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