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RWD = no torque steer.
FWD = torque steer in almost every car, especially if it has decent power.
In FWD, the front wheels both transfer power to the road; and steer the car. When enough throttle/power is applied, the steering system is influenced. The car may tend to pull in one direction or another. The driver must be alert to keep the car pointed where it is desired. In a bad case scenario (i.e. a car with a lot of torque steer) the driver is often fighting the wheel when under power to keep the car going in the right direction.
In a RWD car, there is no torque steer. The rear wheels have one major job which is transmitting power. The front wheels steer. There is no conflict between the two.
Many newer FWD designs do much to mitigate torque steer. But, with enough power, it always exists to some extent.
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