Confirm which roof equipment is fitted
Do not assume every UNI-Z has the same roof opening, glass or drainage arrangement. Compare the production specification with the actual car and ask whether glass or roof components have been replaced. The model-year and version guide helps frame the identification. If an aftermarket installation or repair is present, request its records. A feature appearing in a brochure for another trim does not establish what should be inspected on this candidate. The relevant operating and service instructions must follow the installed equipment.
Map the moisture before cleaning it away
Record where staining, dampness or odour appears: headlining edges, pillars, footwells, seat areas or cargo floor. Note recent rain, washing and climate use without assuming causation from timing alone. Photographs and a written symptom description help a technician choose the next check. A freshly shampooed carpet can complicate the assessment, so ask when cleaning occurred. Do not conceal the evidence with fragrance or accept deodorising as a repair. The location of moisture and its recurrence matter more than a seller's broad statement that the cabin has been dried.
Inspect accessible seals and trim without damaging them
Look for loose trim, visibly damaged seals, uneven glass fit or debris in accessible areas. Do not insert wire, apply unapproved chemicals or use high-pressure air to clear an assumed drain path; the design and approved procedure must be established first. A competent workshop should handle concealed routing and any required disassembly. Use the windscreen repair checks if water appears after front glass replacement. Different entry paths can produce similar interior symptoms, so replacing the most visible seal without diagnosis may leave the original problem.
Separate local leakage from wider water exposure
Assess the moisture findings alongside wiring condition, corrosion, sediment and available history through a qualified inspection. A roof leak does not prove the car was submerged, but an explanation of one leaking seal should not dismiss broader unexplained evidence. Keep conclusions proportional to what has been observed. On iDD vehicles, suspected water involvement near high-voltage components requires the appropriate specialist procedure; do not energise or charge the car merely to see whether it still works. Safety and evidence preservation take priority over completing a sales demonstration.
Use a controlled professional leak test
Ask the workshop to reproduce the concern through an appropriate method and identify the entry point, rather than soaking the whole car indiscriminately. Record the test conditions, area assessed and result. Electrical equipment and interior materials need suitable protection. A successful dry-weather drive cannot prove that a rain-related leak is fixed. If the symptom only occurs under particular parking or weather conditions, explain that pattern to the technician without demanding an unsafe simulation. The repair decision should follow the diagnosis, not a guess based on a common internet complaint.
Verify drying and repair consequences
A complete repair may need both correction of the entry path and appropriate treatment of affected materials or components. Ask what was wet, what was inspected and whether any electrical or restraint-related follow-up is required. Do not assume that a dry top surface means the underlying insulation is dry. Retain invoices and photographs, then repeat the relevant controlled check. The climate assessment can address persistent demisting or odour concerns, but it should not be used to mask continuing water entry.
Decide acceptance before export
Unresolved moisture can become harder to investigate after transport and a climate change. Agree whether repair and verification must occur before shipment, and confirm destination support if any follow-up remains. Add the outcome to the vehicle inspection file with the evidence limits stated clearly. A discounted price does not establish that hidden damage is minor. The buyer should know whether the cause is identified and corrected, requires further work or remains uncertain, rather than receiving a cosmetically fresh cabin and an undocumented promise.
Buyer checklist
- Identify fitted roof and any previous glazing work.
- Preserve the location and timing of moisture evidence.
- Use qualified leak testing, not improvised drain clearing.
- Verify the cause, affected materials and repair outcome.
Questions and answers
Does a damp carpet prove flood damage?
No. Several local water-entry or cleaning causes are possible. Assess the wider evidence and have the source investigated before making either a flood conclusion or a reassurance that nothing is wrong.
Can I clear a suspected drain with wire?
Do not improvise. Confirm the system and approved procedure with a qualified workshop; unsuitable tools or pressure can damage concealed components and create another leak.
Reference information
Use the applicable market and year documentation for equipment and operating limits. The references have their own market and publication scope; they do not establish the condition, fitted equipment or destination approval of an individual vehicle.
Continue with the accident and flood checks, or send your vehicle requirements.