Yes my Ford Festa auto the cones in the transmission, wore out, so I removed it and fitted a manual transmission, I would think the newer cars with gears my wife's car is an 8 speed auto, is a tad more complex to the infinitely variable transmission of the old festa which was a modern version of the one used in the DAF, yet I did not attempt to repair it. By the time it failed the car was worth less than £500 so if I could not have DIY the repair, it would have been scrap. Most repairs on even a £2000 car are worth doing, however I still see milk floats being used, with lead acid batteries, and the life expectancy for a lead acid traction battery is 25 years, and one cell can be renewed, I have changed cells myself in a forklift battery, the problem is it is not a cell change but a whole battery, seems to me a design flaw.