Le Mans GT1 homologation Porsche — water-cooled twin-turbo flat-six, mid-engined, 25 road cars across Evo and 98 specifications.
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Built to homologate the 911 GT1 for the BPR / FIA GT Championship and Le Mans GT1 class, the Straßenversion ('road version') 911 GT1 was a mid-engined, water-cooled twin-turbo flat-six car wearing 993 / 996-derived bodywork. Approximately 21 GT1 Evo cars and a further 5 GT1 '98 Straßenversion cars were built between 1996 and 1998 — the 'street' versions of the GT1 Evo and the all-carbon 1998 GT1, which won Le Mans outright that year.
Mechanically the 911 GT1 was a clean-sheet design — only the headlamps, tail lights and certain interior items were shared with the production 911. The road cars were registered for the road but driven sparingly; nearly all surviving cars now reside in significant collections.
Porsche's most extreme homologation 911 — the only mid-engined production 911 and the road version of the 1998 Le Mans winner.
| Variant | Years | Production | Notes |
|---|---|---|---|
| GT1 Evo Straßenversion | 1996–1997 | 21 | Approximate. |
| GT1 '98 Straßenversion | 1998 | 5 | All-carbon body; matches Le Mans-winning car. |
Start with identity, paperwork and originality. For the Porsche 911 GT1 Straßenversion, the strongest cars have continuous ownership history, matching numbers where applicable, original books and tools, factory build documentation and evidence of work by manufacturer-approved specialists. Factory road-version build documentation; Porsche Motorsport service.
Mid-engined water-cooled twin-turbo flat-six; service requires Porsche Motorsport / Manthey-Racing involvement. A proper pre-purchase inspection includes cold-start behaviour, ECU diagnostics and fault-code history (where applicable), leak-down or compression testing, underbody photography, suspension and chassis inspection, brake condition and a long enough road test to expose heat-related faults. Deferred maintenance on a car of this class is almost always more expensive than buying a better-sorted example.
Use a paint-depth gauge, lift access and a specialist familiar with the model's factory panel gaps and finish standards. Collector value is dramatically affected by structural repairs, refinished panels, poor paintwork and missing factory trim or option content. Documented cosmetic refresh is acceptable; concealed accident or fire damage must be priced severely.
Verified factory road-version build; full Porsche Motorsport history. Specification, colour, options and limited-build variants move values significantly. Buy the best-documented example in the most desirable specification you can justify, rather than a tired example of a rarer derivative that will need years of corrective work.
Regional ranges authored independently — each reflects its local market, not an FX conversion
Budget annually even if the car is used sparingly. Fluids age, tyres and date-coded rubber components must be replaced regardless of mileage, and stored cars need exercise. A documented maintenance rhythm protects both reliability and resale value.
Porsche Motorsport / Manthey-Racing only. Before purchase, confirm parts availability for model-specific bodywork, electronics, gearbox and engine components. A discounted car waiting on unobtainable parts or a factory service slot is rarely a saving in collector ownership.
Each region quoted in its local currency — independent market readings, not FX conversions
Thin trading volume; concentrated in significant collections.
| Date | Auction | Car | Mileage | Result |
|---|---|---|---|---|
| 2024-08-16 | RM Sotheby's Monterey | 1997 911 GT1 Evo Straßenversion | — | $7,045,000 Sold |
Only mid-engined production 911; Le Mans-winner road version; thinnest possible market.
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