LEGO 956 Auto Chassis is a vintage Technic set from 1978 valued at $402 for new and sealed sets, up 581% from an original retail price of $59.00. Annual appreciation has averaged 4.08% since release. On the used market, values range from $180 to $225 based on condition.
LEGO 956-1 Auto Chassis is a Technic set released in 1978 in the United States, containing 599 pieces. It is the U.S. release of set 853 Auto Chassis, which first appeared in Europe in 1977 under the Technical Set series and was marketed in the U.S. as part of Expert Builder. The model is a studded car chassis with a 4-cylinder inline engine, 2-speed transmission, rack-and-pinion steering, adjustable seats, and a stowable rear armrest. Mechanical details include square pistons, a crankshaft, cooling fins, an exhaust manifold, and steering operated from the driver's position, and instructions also supported alternate builds including a jeep, dragster, truck, and a working lathe model.
A new and sealed Auto Chassis is currently valued at around $402, with annual growth of approximately 4%. The average used price is $188 for those in good overall condition. Based on current trends, this set could be valued near $418 within the next year.