RM Sotheby's is an auction house specializing in collector and classic cars, formed through the partnership of RM Auctions with Sotheby's and headquartered in Blenheim, Ontario, Canada. RM Auctions was founded in 1991 by Rob Myers, growing out of his classic car restoration business, and Sotheby's acquired a strategic stake in 2015, creating RM Sotheby's as the group's flagship automobile auction brand.
The company conducts flagship auctions at major collector car events worldwide, including Monterey during Pebble Beach car week, Amelia Island, Paris during Retromobile week, Villa Erba on Lake Como, London, and standalone single-collection sales. It has set many of the highest prices ever achieved for automobiles at auction, including the 1955 Mercedes-Benz 300 SLR Uhlenhaut Coupe sold in 2022 for 135 million euros, the most expensive car ever sold at auction.
RM Sotheby's combines auction sales with private sales, estate and collection management, and financial services for collectors, supported by a specialist team across offices in North America, Europe, and Asia. Its catalogues cover pre-war classics, post-war sports cars, modern supercars, and competition cars, frequently handling Ferrari, Mercedes-Benz, Bugatti, and Porsche icons.
Bidding is available in person, by phone, and online through the company's digital platform, with sales results and upcoming auctions published on its website.