The 1998 LeSabre sedan is available in two models - Custom and Limited. Changes for the 1998 model year include a new four-speed automatic transmission designed to improve shifting and increase fuel efficiency. New exterior paint colors include Twilight Blue Metallic, Midnight Blue Pearl, Emerald Green Pearl and Slate Green. The Gran Touring package is offered as an option on both models and includes magnetic variable steering, 16 inch aluminum wheels and automatic leveling control. Buick is now using reduced force airbags on all models and is offering all buyers a new optional OnStar Communications System. OnStar provides automatic notification of air bag deployment, stolen vehicle tracking and theft detection.