Size and Capacity:
* Large: Big, massive, hulking, substantial, enormous, gargantuan
* Small: Compact, mini, diminutive, petite
* Heavy-duty: Powerful, robust, rugged, strong, sturdy
* Light-duty: Nimble, agile, maneuverable, versatile
Appearance:
* Shiny: Gleaming, sparkling, polished, lustrous
* Dusty: Dirty, grimy, soiled, neglected
* Sleek: Streamlined, aerodynamic, smooth, graceful
* Boxy: Angular, blocky, chunky, square
* Rusty: Corroded, weathered, aged, oxidized
Performance:
* Fast: Speedy, swift, rapid, nimble
* Powerful: Strong, mighty, robust, forceful
* Reliable: Dependable, trustworthy, sturdy, durable
* Efficient: Fuel-efficient, economical, thrifty
Purpose:
* Work: Commercial, industrial, heavy-duty, utility
* Delivery: Cargo, transport, hauling, shipping
* Personal: Recreational, off-road, adventure, customized
Feelings:
* Impressive: Awe-inspiring, imposing, majestic, grand
* Nostalgic: Classic, vintage, antique, retro
* Threatening: Intimidating, menacing, aggressive, domineering
Other:
* Modern: Contemporary, sleek, futuristic
* Vintage: Classic, antique, retro, nostalgic
* Customized: Modified, personalized, unique, one-of-a-kind
* Basic: Simple, utilitarian, functional
The best adjectives to use will depend on the specific truck and the context you're describing it in.