Nissan Skyline GT-R (R33)

Start with identity, paperwork and originality. The strongest cars have a continuous service file, matching numbers, complete books and service records, and — where available — the original Japanese registration documents, export certificate and any Nismo or dealer build documentation. For the R33, focus on unmodified, low-mileage standard-GT-R and V-Spec cars with clear Japanese paperwork and export documentation; LM Limited and Nismo 400R examples with documented provenance are the top of the range.

Inspection should be led by a marque specialist familiar with the RB26DETT, ATTESA E-TS all-wheel-drive system and Super-HICAS four-wheel steering. Compression and leak-down figures on all six cylinders, boost integrity, ATTESA transfer-case behaviour under load, HICAS actuator condition, gearbox synchro and clutch feel, and a full underbody survey for accident repair and modification history are all essential.

The Skyline GT-R has been one of the most heavily modified performance cars in history. Original-specification, unmodified cars are increasingly rare and command a very clear premium. Confirm the specification against factory records where possible, and treat any car with a substantially non-standard engine bay, driveline or interior as a driver rather than a collector prospect.

Use a paint-depth gauge and a lift inspection. Rust in wheel arches, chassis rails and around the rear subframe is the primary body concern. Accident and repair history is the second — the GT-R was a track and street icon in Japan and has a high incidence of both.