The Porsche 997.2 GT3 (2009–2011) is the facelifted, enlarged evolution of the track-focused, naturally aspirated 911. Displacement grew to 3.8 litres and output to 435 hp, all from the motorsport-derived Mezger flat-six, driving the rear wheels through a 6-speed manual only. It is the last naturally aspirated Mezger GT3 before the 991 switched to the DFI 9A1 engine.
Specifications
| Attribute | Specification |
|---|---|
| Production Period | 2009–2011 |
| Engine Type | 3.8L Mezger flat-six, naturally aspirated, dry sump |
| Displacement | 3,797 cm³ |
| Power | 435 hp @ 7,600 rpm |
| Torque | 430 Nm @ 6,250 rpm |
| Redline | ~8,500 rpm |
| Drivetrain | Rear-wheel drive (RWD) |
| Transmission | 6-speed manual only |
| 0–100 km/h | 4.1 s |
| Top Speed | ~312 km/h |
| Kerb Weight | ~1,395 kg |
| Suspension | Track-focused, adjustable, PASM |
| Key Features | Centre-lock wheels, fixed rear wing, dynamic engine mounts |
| Emissions Standard | Euro 5 |
Highlights
The last naturally aspirated Mezger GT3. Centre-lock wheels, standard dynamic engine mounts (PADM), optional front-axle lift and bucket seats. A road-legal track car with no IMS and no DFI, famed for its 8,500 rpm top end and hydraulic steering.
Common Issues
- Mezger engine is extremely robust; main risks are over-revs and track abuse, not design flaws
- Check for crash/track damage, kerbed centre-lock wheels, worn suspension spherical joints
- Early recall on a rear wheel hub issue, confirm it was carried out
- Clutch wear on hard-driven cars
Maintenance
| Task | Interval |
|---|---|
| Oil Change | Yearly or every 12,000–15,000 km |
| Spark Plugs | Every 4 years |
| Brake Fluid | Yearly (track use), 2 years (road) |
| Valve clearance check | Per Porsche schedule |
| Coolant | Every 6 years |
Market Analysis (as of 2025)
- Good condition: CHF 110,000–140,000
- Low mileage / exceptional: CHF 150,000+
Values are steadily rising as the last Mezger GT3.
Buying Considerations
- Documented over-rev history (readable from the DME)
- Evidence of track use and subsequent servicing
- Confirm the hub recall was done
- Original, unkerbed centre-lock wheels
FAQ
Manual only?
Yes. The 997.2 GT3 is manual-only; PDK did not arrive on the GT3 until the 991.
Does it have IMS or DFI issues?
No. The Mezger engine has neither.
Driving Experience
The benchmark analogue track-day 911: hydraulic steering, a screaming 8,500 rpm Mezger, a precise manual and fixed-wing downforce. Uncompromising but genuinely useable on the road.
Comparison vs. Other 997.2 Models
- 997.2 GT3 RS: 450 hp, wider track, more aero, lighter
- 997.2 GT3 RS 4.0: 500 hp halo, 600 units
- 997.2 Carrera GTS: 408 hp, more usable every day