Porsche Turbo S
The DKH is the maximum evolution of the 9A2 case — 3.8 litres, two turbochargers, 650 hp, 800+ Nm. Technically near-identical to the DKEA, but with larger compressor wheels and higher-rated boost control. The early 992 platform issues (PADM engine mounts, fuel injectors per TSB MC-10249857-0001) affect the Turbo S just as they do the Carrera — with the difference that a failure at 650 hp is more dramatic. Track use is common with the Turbo S, and here the cooling system shows limits: oil and coolant temperatures approach the system limit under sustained high load. Preventive ignition coil replacement at 50,000 km is routinely done by experienced Turbo S owners. Monitor the rear crankshaft seal under the extreme torque loads long-term.
Turbo S Cabrio — everything at once
478 kW, open, AWD — the 992 Turbo S Cabrio is the generation's all-round high-performance vehicle. Open, the biturbo sounds more direct, the acceleration is identically brutal. As a GT travel car without limits, the most impressive choice in the 992 line below the GT programme.
Engine Weaknesses 6
Documented per TSB MC-10249857-0001 — reproducible earlier due to maximum boost pressures and Sport Boost mode. Limp mode under overboost is a known pattern.
Symptoms: Reduced engine power under full load, limp mode after Launch Control, fault codes P020100/P020400
Identical PADM issue from early 992 batches also affects the Turbo S. Highest engine power places greater stress on active mounts. Revised mounts available.
Symptoms: PADM fault message, increased vibration, adaptive engine mount deactivation
On the 650 HP Turbo S, ignition coils are subjected to the highest operating temperatures in the 992 range. Preventive replacement at 50,000 km recommended.
Symptoms: Misfires under high load, P0301–P0306 OBD codes, power loss on track
On the DKH with 800 Nm+ peak torque, the rear crankshaft seal is under particularly high long-term stress. Transmission removal required for access.
Symptoms: Oil film between engine and transmission, oil smell after driving, PDK fluid contamination in extreme cases
The DKH generates extreme thermal load during track use — coolant and oil temperatures approach system limits. Without cool-down phases, temperatures reach critical levels.
Symptoms: Coolant temperature above 110°C during track use, oil temperature above 140°C, power reduction during sustained high load
The 3.8-litre DKH also develops long-term DFI-related deposits on intake valves. Preventive cleaning from 80,000 km recommended.
Symptoms: Power loss, slight rough running, increased fuel consumption — only noticeable at high mileage
Vehicle Weaknesses 9
Software fault on 8,666 vehicles: the hazard lights do not activate reliably during emergency braking. Free software update at the dealer.
Early build years 2019/2020: windscreen not correctly bonded, water enters the footwell. Repaired under warranty.
The complex Targa mechanism locks up in wet or cold weather. The rear lid opens, the latches release, but the roof does not travel back. Workshop lubrication usually fixes it permanently.
The PCM 5.0 infotainment system freezes on the Porsche logo or restarts spontaneously. Driver profiles are also not correctly restored after restart. Often fixable via software.
The active engine mounts (PADM, Sport Chrono) lose their damping function due to sensor failure. In 98% of cases only the internal sensor is faulty — full mount replacement is not needed.
Door cards, dashboard area and parcel shelf creak and rattle over bumps. Several owners report build quality inadequate for the price segment.
The thermally sealed fold lines roughen up relatively quickly. Never stow a wet roof, and re-treat regularly with protectant. The issue is known from the 991 generation and has not been fully resolved.
Known noise source: the steering rack cover contacts the steering linkage and produces a creaking sound. Porsche has issued an official service bulletin for this.
Wind noise can occur around the seals at high speeds. Readjustment and silicone treatment help. Significantly quieter than the predecessor, but not at coupé level.