I agree, at least two torque wrenches, one for higher torques, such as wheel nuts and one for lower ones such as spark plugs. thing I have a 6 inch long one (oh-er missus) that does something like 20-50 Nm and then a larger one, 20 inches or so from 40- 300 Nm ish, very useful tools. Other than that, a decent socket set. I've been through so may £10 - £30 sets you wouldn't believe, they always fail when working on cars eventually, usually sheared adaptors or damaged ratchet mechanisms, I recommend Halfords advance for these