There have been several occurrences of brake failure which required "pumping" to correct. This was checked out by the dealership who found no fault, but it hasn't happened since!
At the same time we had the engine tuning checked out as it was giving 22mpg at best. We were told there was nothing wrong, but to bear in mind that it does use a lot of fuel during the first 2000 miles.
This is the ideal vehicle for me as I am disabled and in a wheelchair. The vehicle is hired under the Motability scheme. The automatic was a must as my main problem is with my left leg.
This is our third consecutive Vauxhall having had a 1.8 Vectra and a 1.7TDi Astra. We have been amazed at the awful fuel consumption, still getting no more than 22mpg. The Dealership say talk to Motability, but I can't seem to get a correct figure for normal fuel consumption from which to present my complaint. As far as pre-purchase information is concerned I do not remember being quoted anything so ridiculously low as that. If I had I would never had got the car.
My 2002 Passat 1.8 Turbo Automatic does 30mgg around town and between 35-39mpg on the motorway. Definitely sounds like your 22mpg is not right. I assume you are filling brim to brim and calculating fuel used against gallons used, rather than relying on the fuel computer.
22mpg does indeed sound pretty bad for a Zafira : my Xreg. 1.8 manages 32 mpg around town rising to 40 mpg on a long run.