Under the hood, the 1999–2000 Tacoma Regular Cab 4WD offered two engine options. The base model featured a 2.4 - liter 2RZ - FE inline - four engine, delivering 142 horsepower and 160 lb - ft of torque. For those craving more power, a 3.4 - liter 5VZ - FE V6 engine was available, producing 190 horsepower and 220 lb - ft of torque. Paired with either a five - speed manual or a four - speed automatic transmission, these powertrains provided a balance of efficiency and strength. The 4WD system, with its part - time setup and manual transfer case, enabled drivers to easily switch between 2WD for regular driving and 4WD when venturing off the beaten path, making it a capable companion for both city streets and rough terrains.

The Tacoma's interior, while simple, emphasized functionality. The Regular Cab layout offered a snug yet comfortable space for two passengers, with durable cloth upholstery and straightforward controls. Cargo - hauling was a breeze, thanks to the truck bed's generous dimensions and sturdy construction. Additionally, safety features included front airbags and anti - lock brakes, which were progressive for its time. Even decades later, the 1999–2000 Tacoma Regular Cab 4WD continues to be sought after by enthusiasts and practical drivers alike, a testament to its enduring appeal and Toyota's commitment to quality and durability.