1990 buick riviera 2 dr, blue, sun roof, tan leather interior like brand new, only 41,200 original miles, very exceptional “rare” riviera 2dr. has full power and entities, has economical v-6 engine with power to spare. ser#1g4ez13c7lu416157 utah value guide that banks and appraisers use to find approx value of cars says $13,500.00