The Lemon Index
Porsche's 3.8 L and 4.0 L naturally aspirated flat-6 in the 911 Turbo / GT3, model years 2014–2024. YouTube likes the 2022 best.
A safer bet: YouTube owner tone 54/100, #34 of 165 engines with a YouTube study (in the top third); no engine-related recall on record, 1 known issue listed below.
Reliability by year
Not enough complaints to chart. Owners filed 1 complaint with the government that we can tie to this engine's cars, 2014–2024, about any part of the car. Supercars sell in small numbers, so we show YouTube, recalls and the automaker's repair notes instead.
YouTube videos are most positive about the 2022 (62) and least about the 2014 (45); neighboring years share many of the same videos, so small gaps mean little.
How we count: owner complaints only where the car's name and year leave no doubt; YouTube tone from videos that name this engine or its cars. How we count
Owner complaints (NHTSA) are filed by model and year, not engine. We count one for this engine only when the model name and year had no other engine (e.g. "488 GTB", "GT-R"), or when the owner's own words name a version that had only this engine that year (Z06, ZR1, Hellcat, GT500 ...). They cover the whole car (wheels, air bags, electrics ...), not only the engine, and none of them is a failure rate. We chart them only for engines with 30 or more, over 3 or more years. YouTube tone = how positive the videos are, 0–100, from titles and transcripts (praise vs trouble words, the title counts 3 times), weighted by views; a year needs at least 3 videos' worth. A video counts for this engine when its title names the engine or a car that only had this engine in the years it names; a video whose title names no model year counts toward every year of that car, so neighboring years share most of their videos.
All the numbers, year by year
| Year | Cars | Owner complaints | YouTube says | Recalls |
|---|---|---|---|---|
| 2014 | 911 Turbo / GT3 | 0 | 45 (30 videos) | 0 |
| 2015 | 911 Turbo / GT3 | 0 | 57 (33 videos) | 0 |
| 2016 | 911 Turbo / GT3 | 0 | 53 (31 videos) | 0 |
| 2018 | 911 Turbo / GT3 | 1 | 60 (31 videos) | 0 |
| 2019 | 911 Turbo / GT3 | 0 | 55 (31 videos) | 0 |
| 2022 | 911 Turbo / GT3 | 0 | 62 (32 videos) | 0 |
| 2023 | 911 Turbo / GT3 | 0 | 55 (29 videos) | 0 |
| 2024 | 911 Turbo / GT3 | 0 | 48 (29 videos) | 0 |
Recalls on cars with this engine
No NHTSA recalls we can tie to this engine's cars.
Engine problems Porsche told dealers about
Porsche sent dealers 175 repair notes about the engine on these cars, including:
- Technical information for Oil Leakage in the Area of the Upper Part of the Oil Pan and Crankcase: Checking…
- Instructions on advanced technical information for DME fault P310B00 - fuel low pressure
- Technical information on the check engine warning light active in conjunction with fault memory entry…
NHTSA manufacturer communications (technical service bulletins), matched by model name and year like the complaints, engine-related ones only. A repair note is not a recall: ask a seller whether it was done.
Known issues on record
- In 2014 Porsche replaced the engine in all 785 991 GT3s built so far after a supplier error in the connecting-rod bolts (two cars caught fire), and later gave a 10-year / 120,000-mile engine warranty over valvetrain wear. Source
Every US version with this engine
| Car and versions | Years |
|---|---|
| Porsche 911 Turbo / GT3 911 GT3, 911 GT3 RS, 911 GT3 Touring | 2014–24 |
Engine codes: MA1.75 (991 GT3), MA1.76 (GT3 RS, 991.2 GT3); the 992 GT3 keeps the 991.2 engine. Power: 468–513 hp, factory figures (475 to 520 PS). Versions and years: EPA (fueleconomy.gov). Sources: Porsche 911 GT3 · Porsche 991 · Porsche 911 (992).
Quick answers
What cars have the Porsche GT3 flat-6 (MA1) engine?
In the US: the Porsche 911 Turbo / GT3, model years 2014–2024. See the version table for each one.
Is the Porsche GT3 flat-6 (MA1) reliable?
Mostly yes. YouTube owner tone 54/100, #34 of 165 engines with a YouTube study (in the top third); no engine-related recall on record, 1 known issue listed below. Not enough owner complaints to judge it per car: supercars sell in small numbers. Have any used car inspected.
How much horsepower does the Porsche GT3 flat-6 (MA1) make?
468–513 hp in factory figures, depending on the car (475 to 520 PS).