Delivers 32 Highway MPG and 21 City MPG! KBB.com 10 Most Comfortable Cars Under $30,000, KBB.com 5-Year Cost to Own Awards. This Buick Verano has a trusty Gas/4-cyl 2.4L engine powering this Automatic transmission.*Make a Reliable Purchase *According to Carfax's history... via HomeNet, Inc.