The Lemon Index
Mercedes-AMG's 6.0 L twin-turbo V12 in the Pagani Huayra, model years 2014–2023.
A safer bet: YouTube owner tone 55/100, #27 of 165 engines with a YouTube study (in the top third); no engine-related recall on record.
Reliability by year
Not enough complaints to chart. Owners filed 1 complaint with the government that we can tie to this engine's cars, 2014–2023, about any part of the car. Performance versions are mostly filed under their base model (a Shelby GT500 is filed as a Mustang), so we only count complaints whose model name or the owner's own words tie them to this engine, and lead with YouTube, recalls and the automaker's repair notes.
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 | Pagani Huayra | 0 | 55 (171 videos) | 1 |
| 2016 | Pagani Huayra | 1 | 55 (174 videos) | 1 |
| 2018 | Pagani Huayra | 0 | 55 (171 videos) | 0 |
| 2020 | Pagani Huayra | 0 | 55 (169 videos) | 0 |
| 2023 | Pagani Huayra | 0 | 55 (169 videos) | 0 |
Recalls on cars with this engine 1
None of them is about the engine itself.
16V588000 Air Bags · Pagani Huayra 2014–16
In the affected vehicles, the driver side frontal air bag may not remain adequately secured to the steering wheel during deployment, and therefore the air bag may.
NHTSA recalls by model and year. A recall counts here when every confirmed version of that model-year had this engine, or the recall names it. Check a car's VIN for its own open recalls.
Every US version with this engine
| Car and versions | Years |
|---|---|
| Pagani Huayra Huayra, Huayra Coupe, Huayra Roadster BC | 2014–23 |
Engine code: M158 (built by AMG for Pagani). Power: 720–754 hp, factory figures. Versions and years: EPA (fueleconomy.gov). Sources: Mercedes-Benz M158 engine.
Quick answers
What cars have the Mercedes-AMG M158 6.0 twin-turbo V12 engine?
In the US: the Pagani Huayra, model years 2014–2023. See the version table for each one.
Is the Mercedes-AMG M158 6.0 twin-turbo V12 reliable?
Mostly yes. YouTube owner tone 55/100, #27 of 165 engines with a YouTube study (in the top third); no engine-related recall on record. Not enough owner complaints to judge it per car: the government files most performance versions under their base model. Its cars had 1 recalls (0 about the engine, fuel or powertrain). Have any used car inspected.
How much horsepower does the Mercedes-AMG M158 6.0 twin-turbo V12 make?
720–754 hp in factory figures, depending on the car.