Land Rover climbed 54 places since July 2015 and was ranked in third place behind Amazon and Wilko in the survey of CCC 227 brands, including 24 carmakers.
The UKCSI is the national measure of UK customer satisfaction. The Index has run every six months since January 2008 and involves interviews with 10,000 UK consumers.
The year-on-year increase in the number of points was greater than any other of the 226 companies classified, and the biggest improvement out of all of the 24 car manufacturers that took part in the study.
Overall, the automotive sector equally saw a 0.6 point-rise in customer satisfaction.