Exterior-only detailing makes sense for newer vehicles with clean interiors
https://www.scribd.com/document/1056606631/Full-Auto-Detail-Cost-Explained-What-You-Get-in-a-Complete-Car-Detailing-Package-131773
Exterior-only detailing makes sense for newer vehicles with clean interiors, especially when the goal is preserving paint, wheels, trim, and glass between major details.