Hyundai and Kia owners may be receiving compensation for the difference between advertised fuel economy numbers and the real fuel economy numbers.

Thirteen models are affected over three model years.

For Hyundai, this includes the 2012 and 2013 Accent, Azera, Elantra, Sonata Hyrbrid, Tucson, and Veloster; and the 2012 Genesis sedan; the 2013 Genesis coupe; and the Santa Fe Sport.

For Kia, affected models include the 2012 and 2013 Rio, Sorento, Soul, and Sportage.

In order to qualify for reimbursement, first register online (see links below) and then go to your nearest dealership to have your mileage and vehicle ownership validated. Reimbursements will be issued within 15 business days.

You can estimate how much you'll receive using the Hyundai reimbursement estimator or the Kia reimbursement estimator.

Meanwhile, no matter what kind of car you drive, all those ads for new cars that tout amazing highway miles per gallon are misleading. What are those same vehicles getting for city miles?

What they don't say are that the city driving numbers are not so hot. And that's the only number that matters for most drivers.