It's often a stressful drive to get there, particulary during the evening rush or on weekends. This is the result of car-centric planning, which has consequently made every other mode seem difficult and uninviting.
I rode my bike there last week. My route was mostly on minor roads (except a short segment on Jane on the sidewalk), it was quick (quicker than a car during rush hour), and relatively easy. The most challenging part of the ride was crossing the 4-lane ring road that surrounds Vaughan Mills. The intersection circled in red below is a controlled by stop signs, which ends up being really unconfortable to cross by bike or two feet. It's not often that you see such a big intersection controlled by stop signs. The crosswalk doesn't even have curb cuts.
The second issue I have is with the bike parking. Their website clearly says 16 bike racks at each main entrance (in addition to 6300 free parking spaces for cars). I biked around the mall and found a total of 6 bike parking spots for the entire mall (2 spots at entrance #2, and 4 spots at entrance #4). Entrances #1, 3, 5, and 6 had no bike parking, unless you count the light poles.
For what is such a significant urban centre, and traffic generator, I expected better.
I didn't see any bike parking at the Transit terminal at Vaughan Mills either.
One ring and post at Entry 2
Two ring and posts at Entry 4
Here's my bike route from Vaughan City Hall to Vaughan Mills Mall.
If you ask most people, they'd think it is crazy to ride your bike to Vaughan Mills. I would say they are crazy not to. Have you seen the traffic on Rutherford Road at 5pm? You can by-pass that traffic on a bike, and arrive with a smile on your face.