The luxury 4x4 was reported trapped in mud near the beach at Weston-super-Mare yesterday evening. The vehicle was pulled out by the coastguard before the tide surrounded it, the BBC reported.
A coastguard spokesman said the man had taken the vehicle "off-road" without realising the danger of the mudflats.
Motorist are being warned not to drive beyond the beach's hard sand.
"The driver of the Range Rover was a young man who had attempted to test out the vehicle, having watched TV adverts of it being driven off-road," the coastguard spokesman added.
A multi-terrain launching vehicle was used during the rescue and the vehicle was pulled to safety before the tide surrounded it, the report said.