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2026 STEMME S12-G
Starts from the median asking price of 960 comparable Single-Engine Piston listings ($679,900), then adjusts for:
- Year +4 vs comparable listings +6.0%
- Autopilot (64% of comps) +0.7%
- No ADS-B (67% of comps have one) -1.7%
Shown as a range. An estimate from asking-price comparables and FAA supply data — not an appraisal.
Overview
| Make / Model | STEMME S12-G |
|---|---|
| Type | Single-Engine Piston |
| Airframe time | — |
| Engine time | 0 SNEW |
Description
STEMME S12-G | Factory New | S/N 12-064 A rare opportunity to acquire a factory-new Stemme S12-G. This aircraft combines exceptional soaring performance with long-range self-launch touring capability in a side-by-side two-seat configuration. Full Production Specs available upon request. HIGHLIGHTS Both 21.7m and 25m wingspan configurations included Upgraded Nav/ACL package for both winglets Full Garmin G3X glass panel with autopilot Integrated Soaring Computer (LX9000T) Upgraded dual control sticks Complete supplemental oxygen system Factory warranty Delivery: October 2026
Recommended avionics upgrades
No IFR GPS navigator is listed — a GTN 650Xi is the standard entry point for WAAS/LPV capability.
See prices & suppliers ›No ADS-B is listed — a GTX 345 delivers required ADS-B Out plus In (traffic & weather) in one transponder.
See prices & suppliers ›Suggestions are based on the panel described in this listing; verify STC approval for this make/model before any installation.
Service Difficulty Reports (SDRs)
Checking FAA service difficulty reports…
Airworthiness Directives (ADs)
Checking airworthiness directives…
General
| Year | 2026 |
|---|---|
| Manufacturer | STEMME |
| Model | S12-G |
| Condition | New |
Airframe
| Total Time | 0 |
|---|---|
| Fuel Capacity Volume | 32 gal |
| Complete Logs | Yes |
| Spoilers | Yes |
Engine
| Engine 1 Make/Model | ROTAX |
|---|---|
| Engine 1 Time | 0 SNEW |
| Engine TBO | 2000 |
| Turbocharged | Yes |
Range from base
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