Porsche 4S
The 2.9L biturbo in the Panamera 4S E-Hybrid combines a biturbo six-cylinder with plug-in hybrid — 500 hp system output with additional electric range. Anyone primarily wanting to drive short distances electrically and occasionally use combustion power finds a good compromise here. 800V charging technology is not on board — charging takes longer than in the Taycan. Maintenance-intensive but reliable with good care.
4S V6 — Dangerous Charm
The Panamera 4S with 3.6 V6 naturally aspirated engine is sonically one of the best Panameras: the V6 revs freely and sounds sporting. BUT: the 3.6 V6 of the 970 has a well-known bore scoring problem with over 10% failure rate under 50,000 km. Check engine history meticulously, borescope before purchase. If the engine is healthy: a characterful GT. If not: financial disaster.
Engine Weaknesses 7
Early EA839 engines (2017–2018) had smaller roller pins in the rocker arms. Porsche uses larger roller diameters, but there is latent risk at high mileage.
Symptoms: Ticking noise from valvetrain, elevated oil consumption, rough running
Panamera 970 V6 3.6L has over 10% engine failures under 50,000 km according to forum surveys. Alusil block without liners. Engine replacement is often uneconomical.
Symptoms: Knocking noise on cold start, rough engine running, elevated oil consumption.
The EA839 water pump on the 4S with 440 hp shows the same weakness as all other 2.9T/3.0T Panameras: internal coolant leakage into the vacuum lines. Known from Audi lawsuits (Fiscina v. VW). Porsche declines goodwill.
Symptoms: Turbo underboost P0299, limp mode, coolant loss without visible drops, fluctuating heater output
The EA839 V6 shows the same timing chain rattle on cold start as other Audi-family engines. Regular oil changes reduce the risk.
Symptoms: Metallic rattle for 3–5 seconds after cold start, disappears once oil pressure builds
EA839 typical issue: PCV check valves in the crankcase breather hoses fail. Particularly problematic on the high-strung 4S engine, as boost pressure entering the crankcase can lead to increased seal failure.
Symptoms: Whistling from the crankcase, oil consumption, oil mist in intake system, boost instability
On the 4S with 440 hp, the thermal load on the oil filter housing gasket is elevated by twin-turbo boost. The gasket flattens and loses its seal. Repair requires removal of the right-hand turbo.
Symptoms: Oil seepage behind the right front wheel, oil smell especially after spirited driving, dropping oil level between services
The direct injection engine without port injection accumulates oil coke on unwashed intake valves. Usually first noticeable around 60,000–80,000 km. Cleaning is recommended since the 440 hp tune depends on optimal valve lift.
Symptoms: Power loss from around 70,000 km, rough idle at low rpm, reduced throttle response
Vehicle Weaknesses 8
On Turbo variants with high torque, the PDK clutch can wear prematurely with spirited driving. Clutch replacement required.
Roof drains block with leaves. Water enters the interior and can damage the high-voltage battery on E-Hybrid models. Cleaning every 2 years is essential.
Improved over the 970, but air suspension compressor and valve block remain wear items. High repair costs with premium specification.
Leaves and debris collect at the bonnet hinge recesses and block the water channel in front of the windscreen. Water runs into the passenger footwell or boot. Regular cleaning required.
Radar and camera systems for driver assistance show false alerts in poor weather or with dirty sensors. Calibration required after windscreen replacement.
Door seals allow road noise in. Headliner detaches at the sides due to brittled clips.
The Panamera's high vehicle weight leads to rapid pad and brake disc wear especially at the front axle. Check the brakes regularly, particularly after motorway runs.
Many ECUs in the 971 generation can only be fully read and configured with the Porsche PIWIS diagnostic tool. Standard OBD2 tools fail with PDK mapping, air suspension and ADAS calibration.
Reports & Tests
27 owner complaints filed with NHTSA (2016–2024). Most reported: Engine (7), Powertrain (6), Electrical (6).