Very good, good acceleration given its weight.
I average 11.5l/100 km almost all the time, about two thirds distance on highway. Uses more petrol than a small car, but reasonable. My previous Audi A3 2.0T could run in circles around an FJ, but it couldn't take me on dirt roads etc.
Surprisingly good, but this is not a sports car. Jeep GC is better in this area.
People have complained a lot about visibility. I have *almost* got used to the lack thereof. Need to learn to use and undertand mirrors. It takes more time to learn to park and maneuver in tight spaces than, say, a Jeep Grand Cherokee (which I have driven for long distances recently). The GC is a bit more comfortable too. But, hey, in my FJ I am confident that the car will get me where I want ot go and back, read the GC reviews (!). I admit that the FJ is not the best for someone parking in tight spots every day (or for a family). Driving position is great for me.