Part of Flat Six Value — one valuation site per flat-six 911 generation. Also live: 996Value.com · 997Value.com

The 993 Buyer's Guide

How to buy a 993 (1994–1998) at auction without overpaying for someone else's story. The short version: know your all-in number before the auction, read the listing like a skeptic, and price the inspection items into your bid.

Your number is not the hammer

The hammer is where the costs start. Add the buyer's fee (5% on Bring a Trailer, capped at $5,000; 5% uncapped on Cars & Bids, which matters at 993 prices), shipping ($800–$2,500 for an enclosed cross-country haul), tax and registration in your state, and an immediate-service reserve. On these cars, a first-year reserve of a few thousand dollars is honest, not pessimistic.

Set the all-in ceiling, subtract the costs, and what's left is your max bid. If the bidding passes it, the car was never yours at your price. Let it go.

Four passes over every listing

Photos. Panel gaps, underbody shots, cold-start video. What's missing from the gallery matters as much as what's in it.

Paperwork. Service records, window sticker or build sheet, title status. A car with a file is worth more than the same car with a story.

Comments. Sellers answer direct questions in the comments, and the good ones answer with invoices. Read all of it, including what the seller chose not to answer.

The market. Run the car through the calculator here. The comp list on the result is the discipline: actual sales of the same model, body, and transmission at similar mileage.

The engine, briefly

Every 993 is air-cooled: a 3.6 making 272 hp, or 285 with Varioram from 1996, and the Turbo at 408. The checks that matter are valve guides and top-end history, the secondary air system on US cars, the wiring harness recall, and oil leaks. A specialist PPI with compression and leakdown numbers is not optional at these prices.

The fuller version is the The 993 Engine Guide.

The PPI is the cheapest money in the deal

Get a pre-purchase inspection at a Porsche specialist who knows air-cooled cars. Ask for compression and leakdown numbers, a straight answer on valve guides and top-end history, the state of the secondary air system, and oil leaks mapped rather than shrugged at. On a 993, the inspection is the negotiation. Budget for it before you argue about price.