Final answer:
An un-level steering wheel is commonly caused by improperly set wheel alignment. This issue can be corrected by adjusting the camber, toe, and caster angles to the manufacturer's specifications. Worn steering or suspension parts can also contribute to the problem and need to be fixed.
Step-by-step explanation:
An un-level steering wheel may be the result of incorrectly set wheel alignment. A wheel alignment consists of adjusting the angles of the wheels so they are set to the car manufacturer's specifications. The purpose of these adjustments is to reduce tire wear and to ensure that vehicle travel, particularly at high speeds, is straight and true (i.e. without pulling to one side).
Alignment angles can also be altered beyond the maker's specifications to obtain a specific handling characteristic. Important alignment settings include the camber, toe, and caster. Misalignment of any of these settings can lead to an uneven steering wheel. Regular checks and adjustments are therefore essential to maintain proper alignment.
Other factors that can cause steering wheel un-levelness include worn steering or suspension components. When any components are worn or damaged, they must be replaced or repaired to restore proper alignment and level steering wheel position.