2006 MINI Cooper drivetrain & axles problems

Tl* the contact owns a 2006 mini cooper. The contact stated that while driving 65 MPH, the vehicle downshifted and stalled. The contact had to pull to the side of the road and shift into manual mode to shift the gears up and down. The contact also stated that the battery light illuminated while the vehicle was parked. The contact also stated that the engine malfunctioned due to the cooling system emitting smoke from the engine and corrosion on the engine itself.

Driving home from work as usual, I was exiting the highway when I felt a jolt from the engine compartment, the engine seemed to sputter and as soon as I slowed down to 30 MPH or so the car would not shift back up to the higher gears. Luckily I was only a quarter mile from home so I put the hazard lights on and drove very carefully into my driveway. I put the car in park and got out to look under the hood to see if anything was drastically wrong ( any leaks, smoke, etc.).