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Our read

GarageScout Take

An AMS AutoGroup manual conversion was fitted in 2026 by Autoscope European Car Repair in Plano, Texas, replacing the factory six-speed SMG. A noise found in the original gearbox led to the installation of an inspected used six-speed transmission with approximately 50k miles. Current ownership also includes an estimated $18k of work, including a valve adjustment, fluid changes, replacement of the valve cover gasket, lower radiator hose, fan switch, spark plugs, filters, and tires.

Strengths

  • Manual-converted E46 M3
  • Documented major service

Watch For

  • ABS, DSC, and ASC warning lights illuminate simultaneously, reportedly related to the brake pressure sensors
  • Paint touch-ups were applied to the hood and front bumper under previous ownership
  • The factory gearbox developed a noise after the conversion and was replaced with a used transmission