Wave II of Kelly Blue Book's New Vehicle-Buyer Attitude Study on SUVs claims to chow a 5% decline in consumer interest in buying sport utility vehicles over the last six weeks. Even though petrol prices have begun to decline by a few pennies, the overall cost-per-gallon appears to have had a significant impact on car-buyers. In this latest study, more than four out of 10 SUV considerers indicated that recent petrol prices would keep them from buying the vehicle. Additionally, half of those not considering an SUV as their next vehicle cite petrol prices as their main reason.