1990年製の6750系は、6650系と似た成り立ちの車両です。古い吊掛駆動とゲルリッツ台車を持ちますが、車体には大きな窓と独自の前面デザインを備えています。20両が製造されました。4000系の導入に伴い、その後引退しました。
Series 6750, built in 1990, has similar origin to series 6650. Although they have old nose suspension drive and goeritz bogies, the body have larger windows and original front design. A number of 20 cars were built. As series 4000 is put into service, they were later withdrawn.