With the Mark IV: "The major change is an all-new independent rear suspension utilizing low-pivot swing axles. The body is entirely new with close attention to aerodynamics and a reduced frontal area." At the Sebring 12 Hours sports car race in 1959 the No. 48 Elva Mark IV driven by Frank Baptista, Art Tweedale and Charley Wallace finished first in Class G, and 19th overall. On 21 June 1959, Arthur Tweedale and Bob Davis won the Marlboro Six Hour Endurance Race in Maryland driving the No. 37 Elva Mk IV. Arthur Tweedale repeated the win in the Marlboro Six Hours in 1960. Teamed with Ed Costley he covered 337.75 miles in an Elva Mk V sports car. This was the final iteration of the Elva front-engined sports racing car. The last Mk V chassis won a number of important races in the midwest driven by Dick Buedingen, including the 1961 Elkhart Lake 500 teamed with Carl Haas. At this time Elva Cars Limited was operating from premises at Sedlescombe Road North, Hastings, Sussex, England. Elva produced a single-seater car for Formula Junior events, the FJ 100, initially supplied with a front-mounted B.M.C. 'A' series engine in a tubular steel chassis. "Elva Cars, Ltd., new Formula Junior powered by an untuned BMC 'A' Series 948cc engine. The price of this 970 lb. car is $2,725 in England. Wheelbase: 84", tread: 48", brake lining area: 163" sq. The 15" wheels are cast magnesium. Independent suspension front and rear with transverse wishbones, coil springs, and telescopic shock absorbers. The car is 12 feet, four inches long." Bill de Selincourt won a race at Cadours, France, in an Elva-B.M.C. FJ on September 6, 1959. Nichols switched to a two-stroke DKW engine supplied by Gerhard Mitter. In 1959 Peter Arundell won the John Davy Trophy at the Boxing Day Brands Hatch meeting driving an Elva-D.K.W. "Orders poured in for the Elva but when the 1960 season commenced Lotus and Cooper had things under control and disillusioned Elva owners watched the rear-engined car disappearing round corners, knowing they had backed the wrong horse." Sporadic success continued for Elva in the early part of that year, with Jim Hall winning at Sebring and Loyer at Montlhéry.