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Monza Lab
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Monza Lab
MonzaHaus Index · v1
Quarterly median sale prices for the four water-cooled generations of the Porsche 911 (996, 997, 991, 992), aggregated from public auction results. Tracks the shift from early water-cooled scepticism to GT3/Turbo S appreciation curves.
The MonzaHaus Water-Cooled 911 Index tracks median hammer prices of public auction sales across the four water-cooled 911 generations: 996 (1998–2005), 997 (2005–2012), 991 (2012–2019), and 992 (2019–present). Each generation includes all sub-trims (Carrera, Targa, Turbo, GT3, GT2). For trim-specific curves (e.g. GT3-only), see the dedicated GT Index.
Why water-cooled matters: the 996 has historically traded below air-cooled peers due to initial IMS bearing concerns, but clean examples and rare trims (996 GT3 RS, 996 Turbo S) are seeing strong recovery. The 997 is considered a near-peak collector era (Mezger engine, pre-PDK 6-speed). This index makes those generational dynamics visible at a glance.
Data sources: Bring a Trailer, Cars & Bids, Classic.com, Elferspot, RM Sotheby's, AutoScout24, Collecting Cars. Sold listings only.
This index is published under CC BY 4.0. Attribution: “MonzaHaus Water-Cooled 911 Index” with link to this page.