The Lamborghini 400GT 2+2 was a 2+2-seated sports car from the Italian manufacturer Lamborghini, successor to the 350GT. First presented at the 1966 Geneva Auto Show.
Compared to its predecessor the engine was enlarged to 3929 cc (240 c.i.), increasing the power to 320 bhp (239 kW). The 400GT 2+2 was actually a different body from the 350GT, with a longer wheelbase, different roofline, and some sheetmetal changes throughout the car. The larger body shape enabled the +2 seating to be installed in the rear, where the 350GT only had room for luggage or +1 seating. The bodywork was designed by Carrozzeria Touring. The 400GT 2+2 also had a Lamborghini designed gearbox, with Porsche style synchromesh on all gears, which greatly improved the drivetrain.
There was a variant of the 350GT with the 4L V12 fitted to it, which was called the 400GT. Only 23 of these smaller coupes were built, three of which had desirable aluminum bodywork.
A total of 247 units were built from 1966 to 1968, when it was replaced with the Islero. A special, one-off version called the 400GT Monza was built by Neri and Bonacini, who had previously worked on the 350GT.