The base model is a naturally aspirated engine that relies on the camshaft to control air intake. It is simpler, lighter, and less expensive but produces less power and torque. 

This enhanced variant features a turbocharger to compress air into the combustion chamber, leading to higher power output, improved torque, and greater fuel efficiency. 

The WL family includes other sub-models like WL-AT and WL-TD, tailored for different purposes and platforms. 

The WL engine is well-known for its long-lasting, robust design, making it a dependable engine for demanding applications. 

The engine’s high compression ratio and, in the case of the turbo version, its efficient power delivery contribute to good fuel economy.