Biosecurity might sound like a farming concern, yet it is one of the biggest hidden costs and delay triggers in international car shipping. Soil on a wheel arch, one leaf in a trunk, or a hitchhiking stink bug under a spoiler can hold your vehicle at the dock for weeks while you rack up storage and fumigation fees.
Soil and seeds—carry invasive plants and nematodes
Live insects—brown marmorated stink bug (BMSB), gypsy moth, fire ants
Organic debris—leaf litter, bird nests, animal hair
Fluid leaks—oil or coolant that can harbor pathogens or breach environmental rules
Border agencies treat vehicles as carriers for pests and diseases. Heavy fines, forced re-export, or mandatory decontamination are common penalties when cars arrive dirty or leaking.
| Destination | Typical Hold Fee | Cleaning / Fumigation | Delay |
|---|---|---|---|
| Australia | AU $125–AU $250 per day | AU $550–AU $1,200 | 7–14 days |
| New Zealand | NZ $150–NZ $400 per day | NZ $500–NZ $1,000 | 5–10 days |
| United States | US $45–US $95 per day | US $200–US $600 | 2–5 days |
The message is clear: biosecurity preparation is cheaper than rectifying a problem at destination.
The Agricultural Quarantine and Inspection (AQI) Program enforces a “clean and free of soil” rule at all ports. Vehicles with visible earth or plant material are sent for pressure washing or denied entry. Learn more about U.S. customs essentials in our Dutch car import guide.
Australia operates the toughest vehicle biosecurity regime in the world. Key points:
Mandatory Pre-Loading Biosecurity Guide for exporters
Brown Marmorated Stink Bug (BMSB) season treatments (1 Sep–30 Apr)
Random inspections outside BMSB season.
Failure leads to re-export or destruction at owner’s expense.
MPI requires steam-cleaned exteriors and spotless interiors. A recent blog on MPI vehicle cleaning compliance shows 83% of non-compliant cases stem from poor pre-export washing.
Germany, the Netherlands, and other EU members follow general EU plant-health legislation. Soil contamination drives most secondary inspections.
| Days Out | Task | Details |
|---|---|---|
| –7 | Schedule professional steam clean | Undercarriage, wheel wells, engine bay |
| –6 | Remove organic debris | Leaves in cowl, trunk, sunroof channels |
| –5 | Vacuum and wipe interior | Focus on floor mats, spare-wheel wells |
| –4 | Inspect for pests | Use flashlight to check cavities for eggs or insects |
| –3 | Dry the vehicle | Moisture traps debris; let car sit in a clean bay |
| –2 | Photo documentation | 360° exterior, undercarriage, and wheel arches uploaded to your online portal |
| –1 | Final walk-around with WCS agent | Sign off on Cleanliness Certificate; car moves to container |
Red Flag: Soil in wheel arches or seeds in cabin filters
Solution: West Coast Shipping’s Oakland bio-bay performs high-pressure undercarriage rinse, wheel-off cleaning, and filter replacement.
Red Flag: Rust flakes or oil on chassis rails (harbor micro-organisms)
Solution: After steam clean, we apply a light biodegradable degreaser and photograph underside for MPI evidence.
Red Flag: Surface rust plus live insects inside vehicle
Solution: We coordinate dry-ice blasting for rust and fumigation certificates for any insect evidence.
Red Flag: Mud residue in suspension pockets triggering Korean Vehicle Inspection (KVI) failure
Solution: Compressed-air blowout and second visual pass documented with time-stamped photos.
The Brown Marmorated Stink Bug threat forces temporary rules each year:
Risk Period: 1 September 2024 – 1 May 2025 (Southern Hemisphere seasons invert)
Target Cargo: All vehicles from BMSB-listed countries (USA, Italy, Germany, Japan, China)
Required Treatments: Approved heat (56 °C for 30 minutes) or sulfuryl fluoride fumigation
West Coast Shipping schedules proactive heat treatments on consolidated containers every Friday during the season, so your car isn’t stuck waiting for a spot treatment in port.
Cleanliness Certificate signed by an accredited facility
Packing Declaration (for containerized loads) confirming no organic dunnage
Treatment Certificate if BMSB heat or fumigation applied
Bill of Lading noting “vehicle free from quarantine risk material”
EPA 3520-1 & DOT HS-7 for U.S. entries (explained in our documents guide)
Keep digital copies in your WCS portal; customs officers often request them before discharge.
| Preventive Step | Cost | Potential Savings |
|---|---|---|
| Professional steam clean | $180–$300 | Avoid $600+ destination wash & reinspection |
| In-house heat treatment | $140 per vehicle | Prevent AU/NZ re-fumigation fee $800+ |
| Cleanliness Certificate | Included with WCS prep | Quicker release—skip 3–5 day hold |
Ship off-season – Avoid BMSB surcharge windows when possible.
Bundle multiple cars – One shared heat treatment vs. individual fees.
Use synthetic dunnage – Wood pallets risk ISPM-15 non-compliance.
Remove spare parts with soil – Muddy tires or used engine blocks are high-risk.
Choose experienced forwarders – Our bio-bay process reduces double handling fees.
Does a spotless vehicle guarantee zero inspection?
No, but a documented clean car passes much faster. Ports reserve the right to random inspections.
Is biosecurity prep different for classics?
Older cars often have more rust cavities. We schedule extended undercarriage steaming and rust-flake vacuuming.
Can I ship spares in the trunk?
Yes—clean parts in sealed boxes are fine. Used oily parts or muddy wheels will be flagged.
What if my vehicle fails inspection overseas?
West Coast Shipping arranges bonded cleaning facilities on-site, minimizing storage charges.
Ready to move your vehicle overseas without quarantine headaches? Click below for an instant, all-inclusive quote, book your bio-clean slot, and let West Coast Shipping handle every scrub, form, and inspection on your behalf.