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Motor carrier · USDOT 3668358

MARIO CUSTOM BUILDER INC, Napa, CA: USDOT 3668358 safety record, inspections, out-of-service, crashes

Fleet and drivers are as MARIO CUSTOM BUILDER INC filed them on its MCS-150, last updated April 4, 2023. The carrier has been on the FMCSA register since June 29, 2021. Inspections and crashes are the reports in Velarion’s copy of FMCSA’s inspection and crash files, which hold the reports filed by some states, not every state; FMCSA’s free SAFER snapshot carries the carrier’s national 24-month inspection and out-of-service figures.

Identity

Legal name as filedMARIO CUSTOM BUILDER INC
USDOT number3668358
Status on the censusActive
AddressNapa, CA 94558
CountyNapa County
Operating authorityIntrastate Non-Hazmat Carriers
Hazardous materialsDoes not carry hazardous materials
Safety ratingNot rated
Power units3 (3 trucks)
Drivers3 (0 with a CDL)
On the register sinceJune 29, 2021
MCS-150 last filedApril 4, 2023
MCS-150 annual mileage0 miles
Cargo carriedGeneral Freight

Cited to the FMCSA Company Census File.

Roadside inspections

Velarion’s copy of the inspection file holds no inspection for USDOT 3668358.

Cited to the FMCSA Vehicle Inspection File; up to 50 rows shown, newest first.

Crashes

DateFiled byCityFatalitiesInjuriesTowed awayHazmat released
December 22, 2025CAUnincorporated01Yes

Cited to the FMCSA Crash File; up to 50 rows shown, newest first.

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FMCSA publishes a free snapshot of every carrier on SAFER: its registration, its national inspection and out-of-service figures for the last 24 months, and its crashes; open it for USDOT 3668358.

Nearby on the register

Figures from the FMCSA Company Census File, loaded October 15, 2026, and FMCSA’s inspection and crash files.

How this page was built: FMCSA Company Census File, read October 15, 2026.

What this page shows

This public-records page covers USDOT 3668358, MARIO CUSTOM BUILDER INC of Napa, CA, a motor carrier listing 3 power units and 3 drivers, with 0 roadside inspections on file and 1 crash on file. The page also shows that 0 inspections recorded an out-of-service order, and it notes that the carrier's fleet and driver figures come from its MCS-150 filing last updated April 4, 2023.