The Lemon Index
Alfa Romeo's 2.9 L twin-turbo 90° V6 in the Giulia Quadrifoglio and Stelvio Quadrifoglio, model years 2017–2024. YouTube likes the 2024 best.
A safer bet: YouTube owner tone 58/100, #10 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 4 complaints with the government that we can tie to this engine's cars, 2017–2024, 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.
YouTube videos are most positive about the 2024 (60) and least about the 2017 (55); 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 |
|---|---|---|---|---|
| 2017 | Giulia Quadrifoglio | 1 | 55 (100 videos) | 0 |
| 2018 | Giulia Quadrifoglio, Stelvio Quadrifoglio | 3 | 56 (147 videos) | 0 |
| 2019 | Giulia Quadrifoglio, Stelvio Quadrifoglio | 0 | 57 (144 videos) | 0 |
| 2020 | Stelvio Quadrifoglio, Giulia Quadrifoglio | 0 | 59 (144 videos) | 0 |
| 2021 | Giulia Quadrifoglio, Stelvio Quadrifoglio | 0 | 59 (143 videos) | 0 |
| 2022 | Giulia Quadrifoglio, Stelvio Quadrifoglio | 0 | 59 (144 videos) | 0 |
| 2023 | Giulia Quadrifoglio, Stelvio Quadrifoglio | 0 | 59 (141 videos) | 0 |
| 2024 | Giulia Quadrifoglio, Stelvio Quadrifoglio | 0 | 60 (148 videos) | 0 |
Recalls on cars with this engine
No NHTSA recalls we can tie to this engine's cars.
Known issues on record
- Replacing the accessory drive belt (every 4 years or 60,000 km) means taking the front bumper off. Source
Every US version with this engine
| Car and versions | Years |
|---|---|
| Alfa Romeo Giulia Quadrifoglio Giulia | 2017–24 |
| Alfa Romeo Stelvio Quadrifoglio Stelvio AWD | 2018–24 |
Engine code: 690T. Alfa Romeo's Termoli plant. Power: 505 hp, factory figures. Versions and years: EPA (fueleconomy.gov). Sources: Alfa Romeo 690T engine.
Quick answers
What cars have the Alfa Romeo 690T 2.9 twin-turbo V6 engine?
In the US: the Alfa Romeo Giulia Quadrifoglio, Alfa Romeo Stelvio Quadrifoglio, model years 2017–2024. See the version table for each one.
Is the Alfa Romeo 690T 2.9 twin-turbo V6 reliable?
Mostly yes. YouTube owner tone 58/100, #10 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: the government files most performance versions under their base model. Have any used car inspected.
How much horsepower does the Alfa Romeo 690T 2.9 twin-turbo V6 make?
505 hp in factory figures, depending on the car.