Wealthy drivers 'have dirtier cars'

Well-off motorists tend to drive around in dirtier cars, according to an AA/Populus survey.

Only 6% of car owners from professional and managerial backgrounds wash their vehicle once a week, compared with 8.5% for lower-income owners.

The gap widens among those who clean their car twice a week, with 16% of lower-income owners washing their vehicle fortnightly, but only 11.5% of wealthier owners doing so.