The units in which we talk about cars often differ from the SI units we conventionally use in Physics. This table gives some examples. The last column gives the typical range of values for a normal road car.
Velocity has the same magnitude as speed, but is associated with a direction.
A car moving in a circle may have a constant speed, but it has a changing velocity. Mass is often referred to as weight. Weight is the force exerted by a mass due to the earth's gravitational pull. In SI units, torque is quoted in Nm, but this must not be confused with Joules.