The Maserati Quattroporte is a luxury four-door sedan made by Maserati of Italy. The name translated from Italian literally means "four doors". There have been five generations of the car, each separated by a period of roughly five years.

Quattroporte I (1963 – 1969)

In the early 1960s, Maserati's reputation was at a high. With growing sales, Prince Karim Aga Khan ordered a special Maserati 5000 WP, chassis no. 103,060, designed by Pietro Frua. The following year, Maserati showed the first-generation Quattroporte of 1963, which bore a striking resemblance to the earlier drawing.

Also designed by Frua, the 1963 'Tipo 107' Quattroporte joined two other notable grand tourers, the Facel Vega and the Lagonda Rapide, which could comfortably do on the new motorways of Europe. However, the Quattroporte could be said to have been the first car specifically designed for this purpose.

It was equipped with a 4.1 L (4136 cc/252 in³) V8 engine, producing 256 hp (SAE) (191 kW) at 5,600 rpm, and either a five-speed ZF manual transmission or a three-speed automatic. Maserati claimed a top speed of 230 km/h (143 mph).

Between 1963 and 1966, 230 examples were made.

In 1966, Maserati revised the Tipo 107, adding twin headlights (already on the US model) and, from 1968, a 4.7 L, 295 hp (SAE) (220 kW) engine. Around 500 of the second series were made. Production stopped in 1969.

In 1971, Karim Aga Khan ordered another special on the Maserati Indy platform, given the reference code AM 121.

Quattroporte II (1974 – 1978)

In 1974, at the Turin Show, Maserati presented its Quattroporte II (AM 123) on a Citroën SM chassis, since Citroën had purchased the Italian company. It had an angular Bertone body, penned by Marcello Gandini and fashionable at the time, and was the only Maserati Quattroporte with a hydropneumatic suspension and front wheel drive, also had the swivelling directional headlights à la DS. However, the 1973 oil crisis had intervened and demand for such cars slowed. Furthermore, the modest V6 powerplant from the mid-engined Merak and the Citroën SM (offering less than 200 horsepower) didn't attract many customers. Maserati made 13 Quattroporte IIs. Six of them originally were pre-production cars and the other seven were built to order between 1975 and 1978.

Quattroporte III (4porte 1976 – 1979, Quattroporte 1979 – 1990)

Considered a "business man's Maserati," the Quattroporte III was launched by newly empowered Maserati chief Alejandro de Tomaso and his design staff in 1976. This was a rear wheel drive car, powered by a large V8 engine. It was important to de Tomaso that there was an Italian vehicle to compete with the recently launched Mercedes-Benz 450SEL 6.9.

The production figures for the Quattroporte are as follows:

• There were 1876 Quattroporte III's produced between 1979 and 1988.
• There were 1821 standard 4portes manufactured between 1979 and 1984.
• The remaining 55 cars were all Royales and were manufactured between late 1984 and 1988. These were the US$80,000 cars that were built to order only.