On numerous occasions (typically when needing to accelerate into the flow of traffic), the Reduced Engine Power message and engine light came on, the car rapidly decelerated to 35 mph, and would not accelerate rapidly. Turbocharger, waste gate actuator, and other parts need replaced and reprogrammed, but issue persists. On one occasion, power was reduced and car was stuck ‘revving’ at 25 mph. I have had to swerve off the road to avoid a crash of being rear-ended. Issue started around 60,000 but has happened at least 5 separate times.