The steering on my Jazz is slightly out of true,on a straight road if I centre the wheel the car steers to the right,not something I notice much.I had a couple of Toyota Corrola's with slight offset steering,had them checked and was assured they were within spec,the Vw polo's I had were spot on.I haven't considered having my Jazz checked because it's not much of an issue,I have driven a few makes of cars and often thought the steering was a bit "out"so if your not satisfied get them to test drive the car with you as passenger,you could drive first and centre the steering wheel to demonstrate your concerns.