1. 1VIN-check at nhtsa.gov and confirm the relevant recalls were completed — the Takata-type passenger-airbag recall (19V-141) on early cars and the 21V-561 brake banjo-bolt recall where applicable.
2. 2Inspect the folding-hardtop mechanism specifically: operation through a full cycle, seals and any water ingress, on top of the usual 570 checks.
3. 3Expect the same electrical faults as the coupe (door harnesses, switches, IRIS, battery drain) and the known soft-close door-latch issue; price in specialist repair.
4. 4Check history for timing-chain and tensioner wear reported across the M838T range, and insist on a specialist pre-purchase inspection.

• 19V1410002015–2017
  Takata-type passenger-airbag inflator can rupture and spray metal fragments into the cabin; dealers replace the airbag/inflator free.
• 21V5610002020
  Brake banjo bolt may be missing its drilled fluid-feed holes, disabling braking at one corner; dealers inspect and replace the bolt.

US NHTSA campaigns for this model. A listed campaign may not apply to a particular car, and may already have been remedied — check a specific car by VIN at nhtsa.gov/recalls.