Used cars 'top complaint' for motorists - Citizens Advice
2 November 2013 Last updated at 10:16 GMT
The government is expected to announce the creation of a commission to look at the reasons behind high levels of complaints surrounding used car sales.
Second-hand car sales by independent traders consistently top the list of gripes according to the Citizens Advice consumer helpline.
Consumer and industry groups are being invited to discuss the trend and report back by the spring next year.
Trade bodies say complaints are dealt with quickly by reputable dealers.
The BBC's personal finance reporter Kevin Peachey reports.