Nissan's mainstream sedans expand some options for 2003. Altima comes as the 4-cyl 2.5 and 2.5 S models with manual or automatic transmission, plus a leather-upholstered 2.5 SL version that now comes only with automatic. The top-line 3.5 SE has a V6 and continues with manual or automatic transmission. All Altimas have 4-wheel disc brakes. All but base 2.5 models offer a Braking and Airbag option that bundles ABS with front torso side airbags and head-protecting curtain side airbags; traction control can be added on SE automatics. SEs come with 17-inch wheels vs. the other models' 16s. The 3.5 SE expands its options with a Sport Package that includes a sunroof and rear spoiler, and a Sport Plus Package that adds premium audio and xenon headlamps. The 3.5 SE's Leather Package now includes premium audio, sunroof, and heated seats, all separate options before. A new 3.5 SE Leather Sport Package adds a rear spoiler and xenon lights; a Premium version adds simulated wood inside.