Safety

Optional side curtain-type airbags incorporate a new rollover sensing system for 2006. All seating positions have three-point safety belts, and all-disc antilock brakes are standard. GM's StabiliTrak electronic stability system is also standard.

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    Check Engine Light
    A computer system called OBD II (On-Board Diagnostics-Second Generation) monitors operation of the fuel, ignition, and emission control systems. It ensures that emissions are at acceptable levels ...

    Vehicle Overview
    Buick brings back one of its well-known nameplates — Regal — for its new entry-luxury midsize sedan. Based on the Opel Insignia from Europe, the Regal has a striking resemblance to that model. ...

    What to Add
    If the vehicle has DOT 3 brake fluid, as indicated on the reservoir cap, use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids and Lubricants . If the vehicle has DOT 4 b ...