The Essential Inspection focuses on the RV’s main living systems and overall condition. The Premier Inspection goes a step further by adding a full undercarriage evaluation, which is where many of the most expensive problems can hide. This includes a detailed visual review of the chassis, suspension, brake lines, corrosion, tires, and other mechanical components. For motorhomes, the Premier Inspection also expands into key drivetrain areas such as the engine, transmission, steering, exhaust, axles, and related systems.