GT and GTZ are dropped in favor of Z26 model, which offers a standard 170-horsepower Quad 4 engine. Base models get 10 more horsepower, and the 3.1-liter V6 makes an additional 20 horsepower, up to 160. Automatic transmission is unavailable with Quad 4; manual transmission is unavailable with V6. Door-mounted seat belts are added. Automatic door locks secure doors once Beretta is underway, and unlock when car is stopped. Disable this feature by yanking a fuse. Interior lights shut off after 10 minutes to save battery. Warning chime reminds driver that turn signal has been left on.