The Jensen 541R is a closed four-seater GT-class car built in the United Kingdom by Jensen between 1957 and 1960.
The original aluminium prototype appeared in 1953 as the 541 at the London Motor Show, but production cars used glassfibre. Within a year, the new 541 had earned rave reviews from magazines, notably Autocar, whose testers drove the grand tourer to a top speed of over 125 mph. It was the fastest four-seater the magazine had ever tested at the time.
The 541R employed a low-revving 3993 cc Austin D-Series straight-six engine from the Austin Sheerline. The suspension system came from the Austin A70, with independent suspension at the front via coil springs and a live axle with semi-elliptic springs at the rear. The 541R, introduced in 1957, differed from the 541 by using rack-and-pinion steering instead of a cam-and-roller system and large disc brakes on all four wheels.
The car's styling was by Jensen designer Eric Neale, and was not only considered attractive but also aerodynamically efficient; a Cd figure of only 0.39 was recorded, which became the lowest at Jensen. The body covered a chassis built by bracing 5 in tubes with a mixture of steel pressings and cross-members, creating a platform.
The 1957 model carried the DS7 version of the Austin Sheerline's four-litre motor equipped with twin