Porsche 911 991
Weaknesses, engine ratings and buying advice
700 PS
3.8L Turbo Benzin
515 kW, Rear-Wheel, No Net
Legendary!400 PS
3.8L Benzin
5 weaknesses
Good Choice700 PS
3.8L Turbo Benzin
10 weaknesses
Stay Away!Body Variants
The Porsche 911 991 is available as Coupé and Cabrio — choose your body type for specific insurance data:
Generations
Engine Overview
The Porsche 911 991 is available with 11 engine variants — from 345 to 700 hp. 10 variants had engine changes — the model year is crucial.
The Porsche Carrera (Benziner, 349–370 PS) comes with 2 different engines: MA1.04 (2011–2016, Good Choice) und MA2.01 (2015–2019, Be Careful). Pay attention to the model year for the Carrera!
The Porsche Carrera 4 (Benziner, 349–370 PS) comes with 2 different engines: MA1.04 (2012–2016, Good Choice) und MA2.01 (2015–2019, Be Careful). Pay attention to the model year for the Carrera 4!
The Porsche Carrera 4 GTS (Benziner, 430–450 PS) comes with 2 different engines: MA1.01 (2014–2016, Be Careful) und MA2.03 (2017–2019, Be Careful). Pay attention to the model year for the Carrera 4 GTS!
The Porsche Carrera 4S (Benziner, 400–420 PS) comes with 2 different engines: MA1.03 (2012–2016, Good Choice) und MA2.03 (2015–2019, Be Careful). Pay attention to the model year for the Carrera 4S!
The Porsche Carrera GTS (Benziner, 430–450 PS) comes with 2 different engines: MA1.01 (2014–2016, Be Careful) und MA2.03 (2017–2019, Be Careful). Pay attention to the model year for the Carrera GTS!
The Porsche Carrera S (Benziner, 400–420 PS) comes with 2 different engines: MA1.03 (2011–2016, Good Choice) und MA2.03 (2015–2019, Be Careful). Pay attention to the model year for the Carrera S!
The Porsche GT2 RS (Benziner, 700 PS) has the MDH.NA (3.8L Turbo) — rated: "Stay Away!", 10 known weaknesses.
The Porsche GT3 (Benziner, 476–500 PS) comes with 2 different engines: MA1.75 (2013–2016, Be Careful) und MDG.GA (2017–2019, Be Careful). Pay attention to the model year for the GT3!
The Porsche GT3 RS (Benziner, 500–520 PS) comes with 2 different engines: MA1.75 (2015–2016, Be Careful) und MDG.GA (2018–2019, Be Careful). Pay attention to the model year for the GT3 RS!
The Porsche Turbo (Benziner, 521–540 PS) comes with 2 different engines: MA1.71 (2013–2016, Be Careful) und MDA.BA (2015–2019, Be Careful). Pay attention to the model year for the Turbo!
The Porsche Turbo S (Benziner, 560–581 PS) comes with 2 different engines: MA1.71S (2013–2016, Be Careful) und MDA.BA (2015–2019, Be Careful). Pay attention to the model year for the Turbo S!
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Soft-Top Fabric Chafes — Porsche Refuses Warranty The soft-top fabric shows pronounced chafe marks at the fold lines after 3–4 years. Porsche Germany classifies this as normal appearance. New roof approximately €4,100 plus €1,000 fitting. Symptoms: Clearly visible chafe marks and colour changes on the soft-top fabric, especially at fold lines. Headliner can come loose. from 50,000 km | High | |
| Cabriolet Roof Headliner Creasing The interior headliner of the cabriolet roof develops creases and partially detaches. A cosmetic issue with no functional impact. Symptoms: Visible creases in the roof headliner, fabric coming loose in places from 60,000 km | High | |
| Water Ingress Through Aged Seals Door and window seals harden over time. Water enters the interior in heavy rain. Symptoms: Wet footwell after heavy rain, fogged windows from 80,000 km | Low | |
| Targa Sliding Roof Seal Detaches Repeatedly — Front Right The front right seal detaches over approximately 20 cm. Re-gluing does not hold permanently. Repair requires a complete sliding roof replacement with repainting. Symptoms: Visibly protruding rubber seal front right on the Targa roof. Slight water ingress after rain. Wind noise at motorway speed. from 30,000 km | Medium | |
| Targa Roof Leaks Water in High-Pressure Car Wash High-pressure car washes force water in at the A-pillar/roof joint. Sealed in normal driving and rain. Regular seal conditioning helps. Symptoms: Water droplets on the inside of the windscreen after a car wash. Only at high water pressure, not in normal rain. | Low |
Top Reported Issues
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Known Problems and Issues
A total of 118 weaknesses have been documented for the Porsche 911 991 (2011–2019) — 107 engine-related and 11 vehicle-related. One problem engine: MDH.NA (3.8L Turbo). Typical issues affect Body, Brakes, HVAC, Rust. Considered reliable: MA1.04 (3.4L), MA1.03 (3.8L).
911 (MA1.02, 2008–2012) — Be Careful: Bore scoring on Alusil cylinders, Elevated oil consumption from DFI piston rings, High-pressure fuel pump (HPFP) failure. Power: 345 PS.
911 (MA1.01, 2008–2012) — Be Careful: Bore scoring on Alusil cylinders, Elevated oil consumption from DFI piston rings, High-pressure fuel pump (HPFP) failure. Power: 381–385 PS.
911 (M97.77, 2009–2012) — Be Careful: Coolant pipes detach (GT1 block), Timing chain guide rails worn, Variocam actuator bolts loosen (MY2010/2011). Power: 430–435 PS.
911 (M97.77, 2009–2012) — Be Careful: Coolant pipes detach (GT1 block), Timing chain guide rails worn, Variocam actuator bolts loosen (MY2010/2011). Power: 450 PS.
911 (MA1.70, 2009–2012) — Be Careful: Coolant pipes detach from GT1 block, VTG housing corrosion, High-pressure fuel pump (HPFP) failure. Power: 500 PS.
911 (M97.70S, 2010–2012) — Be Careful: Plastic coolant pipes at oil cooler fracture, VTG linkage seized, Hydraulic engine mount leaking or collapsed. Power: 620 PS.
911 (MA1.01, 2010–2012) — Be Careful: Bore scoring on Alusil cylinders, Elevated oil consumption from DFI piston rings, High-pressure fuel pump (HPFP) failure. Power: 408 PS.
911 (MA1.70, 2010–2012) — Be Careful: Coolant pipes detach from GT1 block, VTG housing corrosion, High-pressure fuel pump (HPFP) failure. Power: 530 PS.
911 (MA1.75, 2013–2016) — Be Careful: Recall: connecting rod bolts come loose (2013–2014), Finger follower and camshaft wear (F-engines), Cylinder wall bore scoring. Power: 476 PS.
911 (MA1.71, 2013–2016) — Be Careful: High-pressure fuel pump (HPFP) failure, Bore scoring on Alusil cylinders, PDK distance sensor / valve block failure. Power: 521 PS.
911 (MA1.71S, 2013–2016) — Be Careful: High-pressure fuel pump (HPFP) failure, Bore scoring on Alusil cylinders, PDK distance sensor / valve block failure. Power: 560 PS.
911 (MA1.01, 2014–2016) — Be Careful: Bore scoring on Alusil cylinders, Elevated oil consumption from DFI piston rings, High-pressure fuel pump (HPFP) failure. Power: 430–435 PS.
911 (MA1.75, 2015–2016) — Be Careful: Recall: connecting rod bolts come loose (2013–2014), Finger follower and camshaft wear (F-engines), Cylinder wall bore scoring. Power: 500 PS.
911 (MA2.01, 2015–2019) — Be Careful: Water pump failure with internal coolant loss, Turbo oil feed pipe failure, Wastegate actuator corrosion and seizure. Power: 370 PS.
911 (MA2.03, 2015–2019) — Be Careful: Water pump failure with internal coolant loss, Turbo oil feed pipe failure, Turbo shaft seal failure. Power: 420 PS.
911 (MDA.BA, 2015–2019) — Be Careful: Premature water pump failure, Turbo oil return lines leaking, Piston and cylinder wall damage under extreme track use. Power: 540 PS.
911 (MDA.BA, 2015–2019) — Be Careful: Premature water pump failure, Turbo oil return lines leaking, Piston and cylinder wall damage under extreme track use. Power: 581 PS.
911 (MA2.03, 2017–2019) — Be Careful: Water pump failure with internal coolant loss, Turbo oil feed pipe failure, Turbo shaft seal failure. Power: 450 PS.
911 (MDG.GA, 2017–2019) — Be Careful: Recall: defective connecting rods (718, 2021 batch), Lash cap detaches — oil pump blocks, Elevated oil consumption during track use. Power: 500 PS.
911 (MDH.NA, 2017–2019) — Stay Away!: Finger Follower Metallurgy Defect — High-Rev Operation, Connecting Rod Bolt Manufacturing Defect — Engine Failure, Intercooler Water Spray — Insufficient Tank Capacity. Power: 700 PS.
911 (MDG.GA, 2018–2019) — Be Careful: Recall: defective connecting rods (718, 2021 batch), Lash cap detaches — oil pump blocks, Elevated oil consumption during track use. Power: 520 PS.
What to watch out for with the Porsche 911? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
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Last updated: February 2026 · All information without guarantee