1981 Buick Riviera This is a Classified ad on eBay for a fixed price of $7,500, this is NOT AN AUCTION. Click here to see all details. More DetailsThe 1981 Buick Riviera is a classic coupe with a beige exterior and tan interior, featuring four seats and a 5.0L gas V8 engine. This car has had two previous owners and has a mileage of 83,000 miles. More Vehicles Like This1992 Buick Riviera$7,5001985 Buick Riviera$15,9001976 Buick Riviera$31,0001967 Buick Riviera$47,900