The engines from the 2000C and 2000CS coupes were used in the 4-door sedan body for the 2000 and 2000TI models.
The 2000 sedan, released in 1965, used the 75 kW (101 hp) engine from the 2000 C. The 2000TI sedan, released in 1966, used the  90 kW (121 hp) engine from the 2000 CS with twin Solex PHH side-draft carburetors.

Intended as an upscale version of the 1800, the 2000 featured distinct wide taillights, more exterior trim, and unique rectangular headlights.
 The American market 2000 sedans could not have the rectangular headlights due to government regulations.
A different grille with four individual round headlights, similar to the design that BMW later used in the 2500 sedan, was offered in the US.
The 2000TI retained the '1800' taillights and headlights.
 A more luxurious 2000TI-lux (later "tilux") featured the sporty TI engine with a more high-grade interior and accessories, including a wood dashboard and optional leather seats.

In a 1967 test, Road & Track felt that the 2000 sedan was "the best performing 2-liter sedan in today's market and the best handling and best riding as well."

In 1969, BMW introduced the 2000tii ('touring international, injected'), BMW's first fuel-injected model, featuring Kugelfischer mechanical fuel injection.
The 2000tii produced 97 kW (130 hp) at 5,800 rpm and 178 N⋅m (131 lb⋅ft) at 4,500 rpm.
1,952 2000tii cars were built of this final New Class sedan model.
The engines from the 2000C and 2000CS coupes were used in the 4-door sedan body for the 2000 and 2000TI models. The 2000 sedan, released in 1965, used the 75 kW (101 hp) engine from the 2000 C. The 2000TI sedan, released in 1966, used the  90 kW (121 hp) engine from the 2000 CS with twin Solex PHH side-draft carburetors.
Intended as an upscale version of the 1800, the 2000 featured distinct wide taillights, more exterior trim, and unique rectangular headlights.  The American market 2000 sedans could not have the rectangular headlights due to government regulations. A different grille with four individual round headlights, similar to the design that BMW later used in the 2500 sedan, was offered in the US. The 2000TI retained the '1800' taillights and headlights.  A more luxurious 2000TI-lux (later "tilux") featured the sporty TI engine with a more high-grade interior and accessories, including a wood dashboard and optional leather seats.
In a 1967 test, Road & Track felt that the 2000 sedan was "the best performing 2-liter sedan in today's market and the best handling and best riding as well."
In 1969, BMW introduced the 2000tii ('touring international, injected'), BMW's first fuel-injected model, featuring Kugelfischer mechanical fuel injection. The 2000tii produced 97 kW (130 hp) at 5,800 rpm and 178 N⋅m (131 lb⋅ft) at 4,500 rpm. 1,952 2000tii cars were built of this final New Class sedan model.
BMW New Class