The 2013 model year brings some updates for the Buick Regal sedan, namely a new automatic transmission option and the discontinuation of the 2.4-liter base model.
The new Aisin AF40 six-speed automatic with Driver Shift Control will be available as a no-cost option instead of the existing six-speed manual gearbox on the 270HP Regal GS. Buick says that acceleration matches the manual with an estimated 0-60 mph sprint time of 6.7 seconds.
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