| G-Series / 930 | 1980–1983 | 911 SC | 3.0 L Naturally Aspirated Flat-6 | 930/10 | Air-cooled | 180–200 | Bosch CIS injection | Head stud breakage; oil leaks; chain tensioner wear |
| G-Series / 930 | 1984–1989 | 911 Carrera 3.2 | 3.2 L Naturally Aspirated | 930/20 / 930/21 | Air-cooled | 207–231 | Final pre-964 Carrera | Valve guide wear; oil leaks; DME relay failure |
| 930 Turbo | 1978–1989 | 911 Turbo (3.3) | 3.3 L Turbo Flat-6 | 930/60 | Air-cooled | 300–330 | Early turbo legend | Turbo lag; head studs; clutch wear; heat soak |
| 964 | 1989–1994 | Carrera 2 / 4 | 3.6 L Naturally Aspirated | M64.01 | Air-cooled | 247 | First AWD 911 | Leaking cylinder bases; distributor belt failures |
| 964 | 1991–1994 | 964 Turbo | 3.3 / 3.6 L Turbo | M30.69 / M64.50 | Air-cooled | 320–355 | Mezger-based turbo | Oil leaks; worn turbos; aging electronics |
| 993 | 1994–1998 | Carrera / C4 | 3.6 L Naturally Aspirated | M64.05 / M64.23 | Air-cooled | 272–285 | Variocam; last air-cooled | SAI clogging; RMS leaks; valve lifter noise |
| 993 | 1995–1998 | Turbo / Turbo S | 3.6 L Twin-Turbo | M64.60 / M64.70 | Air-cooled | 400–450 | First AWD Turbo | Oil seal leaks; boost solenoid faults |
| 996 | 1998–2001 | Carrera / 4 | 3.4 L NA (VarioCam) | M96.01 | Water-cooled | 296 | First water-cooled 911 | IMS failure; cracked liners; RMS leaks |
| 996 | 2002–2005 | Carrera / 4 | 3.6 L NA (VarioCam Plus) | M96.03 | Water-cooled | 320 | Stroke increase | Bore scoring; coolant tank failure |
| 996 | 2000–2005 | Turbo / Turbo S | 3.6 L Twin-Turbo | M96.70 | Water-cooled | 420–444 | Mezger engine | Generally robust; coil pack cracks |
| 996 | 2003–2005 | GT3 / GT3 RS | 3.6 L Mezger NA | M96.76 / M96.79 | Water-cooled | 381 | Track version | Coolant pipe bonding failure |
| 997.1 | 2004–2008 | Carrera / S / 4 / 4S | 3.6 / 3.8 L NA | M97.01 / M97.21 | Water-cooled | 325–355 | Updated M96 design | Bore scoring (esp. 3.8); IMS bearing rare |
| 997.2 | 2009–2012 | Carrera / S / 4 / 4S | 3.6 / 3.8 L DFI | MA1.01 / MA1.03 | Water-cooled | 345–385 | DFI, no IMS | Bore scoring still possible; carbon buildup |
| 997 | 2006–2012 | Turbo / Turbo S | 3.6 / 3.8 L Twin-Turbo | M97.70 / MA1.70 | Water-cooled | 480–530 | Mezger-based | Coolant pipe failures (under track use) |
| 997 | 2006–2012 | GT3 / GT3 RS / GT2 | 3.6–3.8 L (NA / Turbo) | M97.76 / M97.80 | Water-cooled | 415–500 | Mezger block | Coolant pipe and valve train wear |
| 991.1 | 2011–2015 | Carrera / S / 4 / 4S | 3.4 / 3.8 L NA | MA1.04 / MA1.03 | Water-cooled | 350–400 | Last NA Carrera engines | Finger follower wear; bore scoring; oil leaks |
| 991.2 | 2016–2019 | Carrera / S / 4 / 4S | 3.0 L Twin-Turbo | MDA.BA / MDB.CA | Water-cooled | 370–420 | Turbocharged Carreras | Finger follower wear; wastegate rattle; oil separator leaks |
| 991 | 2013–2019 | Turbo / Turbo S | 3.8 L Twin-Turbo | MA1.71 / MDB.71 | Water-cooled | 520–560 | Flagship AWD | Coil pack failures; coolant seal issues |
| 991 | 2015–2019 | GT3 / GT3 RS / R | 3.8 / 4.0 L NA | MA1.75 / MA1.76 | Water-cooled | 475–520 | Motorsport-derived | 2014 recall for conrod bolt failure; valvetrain noise |
| 992 | 2019–Present | Carrera / 4 / 4S | 3.0 L Twin-Turbo | 9A2B6 / 9A2B8 | Water-cooled | 379–443 | New modular engine | Oil separator failure; sensor faults |
| 992 | 2020–Present | Turbo / Turbo S | 3.8 L Twin-Turbo | 9A2B6T | Water-cooled | 572–650 | Top variant | Turbo oil line leaks; actuator faults |
| 992 | 2021–Present | GT3 / GT3 Touring | 4.0 L Naturally Aspirated (Mezger-derived) | 9A1.50 / 9A1.51 | Water-cooled | 502 | High-rev NA engine (9,000 rpm) | Finger follower wear; valve train noise; some oil seal leaks |
| 992 | 2022–Present | GT3 RS | 4.0 L NA (Motorsport derived) | 9A1.60 | Water-cooled | 518 | Track-optimised aero package | Valve train/finger follower wear; intake lifter noise |
| 992 | 2024–Future | 911 T-Hybrid | 3.0 L Turbo + E-Motor | TBD | Hybrid | ~650+ combined | First electrified 911 | Too new; hybri |
