The purpose of this worksheet is to turn a broad model-name search into a decision that can be checked, quoted and handed over without silently changing assumptions.
Continue the evidence route: Confirm the engine through the X3 Pro powertrain guide, connect operating evidence to the fuel and emissions plan, and price repairs through the parts file.
Confirm legal and engine identity
Use VIN, engine evidence, production date and destination rules before interpreting emissions equipment.
Record: Save the source, capture date and VIN reference beside this finding so another candidate cannot inherit it by mistake.
Inspect the exhaust path
Check manifolds, joints, flex sections, shields, catalyst area, sensors, hangers and signs of modification.
Record: Enter the verified value and the evidence owner. If the seller supplied the answer, label it seller-stated until independently checked.
Preserve cold-start evidence
Record warnings, sound, smell, smoke where present and stable operation before the vehicle is warmed for viewing.
Record: Record what was inspected, what remained inaccessible and who performed the check; silence is an open item, not a pass.
Read diagnostics carefully
Keep current, pending and historical faults plus supported fuel-control, sensor and readiness information.
Record: Note every destination assumption behind this conclusion and reopen it when the port, buyer country or registration route changes.
Test under controlled load
Record response, noise, temperature-related symptoms and repeatability without unsafe roadside emissions work.
Record: Attach the supporting photograph, report page or document reference and preserve the original language where translation could alter meaning.
Close destination compliance
Separate physical condition from the documents and test required for registration in the buyer's market.
Record: State the commercial consequence: accept, reject, reprice or request more evidence, together with the person responsible and deadline.
A cleared code is not a repair
Record monitor and fault status before accepting a clean dashboard.
Do not treat deletion as an upgrade
Missing catalyst or altered sensors can create legal, reliability and registration risk.
Avoid universal thresholds
Use the correct procedure and destination standard for the exact production vehicle.
Recheck after work
Repeat leak, diagnostic and controlled operating checks after parts or software changes.
Link fuel control to physical evidence
Sensor data must be interpreted with intake leaks, ignition condition, exhaust leakage, fuel quality and operating temperature. Do not approve a catalyst because one supported value looks plausible, and do not condemn it from a generic threshold without the correct procedure and complete engine baseline. Preserve recently cleared or incomplete monitor evidence instead of translating it into a pass.
Build the destination document file
Keep legal vehicle identity, applicable emissions standard, original records and destination test requirements separate from mechanical inspection. A complete and healthy exhaust does not by itself prove registration eligibility, while a compliant document cannot prove that the used catalyst and sensors remain functional. Name the authority or licensed adviser responsible for closing the legal question.
Protect the baseline before shipment
Record the cold-start warning state, visible exhaust hardware, diagnostic status and odometer immediately before carrier handover. At arrival, inspect for impact, loose shields or new leaks before the first extended drive. A custody record helps separate a pre-existing emissions concern from damage or deterioration that occurred during storage and transport.
Primary market references
These official pages describe their own markets. Confirm the selected VIN and destination rules before using a figure.
Close the note with a decision record
Write the selected candidate, rejected alternatives, evidence reviewed, unresolved questions, responsible person and next deadline. If another vehicle replaces the candidate, reopen identity, inspection, cost and destination checks. A copied conclusion is not valid for a different VIN.
- Confirm legal and engine identity: confirmed / open / not applicable
- Inspect the exhaust path: confirmed / open / not applicable
- Preserve cold-start evidence: confirmed / open / not applicable
- Read diagnostics carefully: confirmed / open / not applicable
- Test under controlled load: confirmed / open / not applicable
- Close destination compliance: confirmed / open / not applicable
Questions buyers should still ask
Confirm legal and engine identity: what should the buyer retain?
Retain the dated document, image or test result that closes “Confirm legal and engine identity”, together with the VIN and the name of the person who supplied or checked it. A listing label alone is not sufficient evidence.
Inspect the exhaust path: what should the buyer retain?
For “Inspect the exhaust path”, write down what is verified and what remains an assumption. An open point may be acceptable, but it must stay visible in the price, inspection scope or handover conditions.
Preserve cold-start evidence: what should the buyer retain?
Recheck “Preserve cold-start evidence” if the vehicle, destination, route or responsible supplier changes. Conclusions belong to the candidate and dated evidence set; they should not be copied to a replacement VIN.