The issue with the Aygo auto is it's an automated manual gearbox rather than a 'proper' auto - so it's slow to respond and can be less than reliable than a traditional torque-converter. The Aygo is very popular with first time drivers, too, which might explain why they're relatively expensive. Have you considered a Honda Jazz? It's a bigger car than the Aygo, with easy access and a reliable CVT automatic gearbox. Alternatively, look for a Hyundai i10 or i20 with a conventional automatic transmission.