Zafira fleet sales have risen by 39% so far this year, with total volume reaching 36,783, putting it into second place behind the Xsara Picasso at 41,211 for the same period, but ahead of the Renault Scenic at 32,761.
The four-speed automatic transmission is already available on 1.8 and 2.2-litre petrol engines.
Adding an automatic box pushes combined fuel economy down to 38.7mpg from 43.5mpg for the manual, and emissions up from 175 g/km of carbon dioxide to 196 g/km. Other changes for the 2003 models include white rear indicator lenses and a new trim level called Design, which replaces Comfort, and has white dials with chrome trim, CD player, and a leather steering wheel. Prices for the Design model include £15,245 for the 1.6-litre petrol, and £16,245 for the 2.0 DTi. The auto version adds a £995 premium to all models.