The Lemon Index
Hyundai's 3.3 L twin-turbo 60° V6 in the Kia Stinger GT and Genesis G70 3.3T, model years 2018–2026. YouTube likes the 2018 best.
A safer bet: YouTube owner tone 54/100, #33 of 165 engines with a YouTube study (in the top third); no engine-related recall on record, 3 known issues 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, 2018–2026, 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.
Why the car page shows more: the Stinger GT page counts 169 complaints and 6 recall campaigns for 2018–2023, everything NHTSA files as "Stinger", other engines included. This page counts only the 4 complaints and 0 recalls we can tie to the Hyundai Lambda II 3.3 twin-turbo (G6DP) by model name or the owner's own words.
YouTube videos are most positive about the 2018 (58) and least about the 2021 (52); 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 |
|---|---|---|---|---|
| 2018 | Kia Stinger GT | 0 | 58 (79 videos) | 0 |
| 2019 | Genesis G70 3.3T, Kia Stinger GT | 0 | 54 (77 videos) | 0 |
| 2020 | Genesis G70 3.3T, Kia Stinger GT | 0 | 55 (81 videos) | 0 |
| 2021 | Genesis G70 3.3T, Kia Stinger GT | 2 | 52 (78 videos) | 0 |
| 2022 | Kia Stinger GT, Genesis G70 3.3T | 2 | 56 (102 videos) | 0 |
| 2023 | Genesis G70 3.3T, Kia Stinger GT | 0 | 52 (77 videos) | 0 |
| 2025 | Genesis G70 3.3T | 0 | not enough videos yet | 0 |
| 2026 | Genesis G70 3.3T | 0 | 54 (16 videos) | 0 |
Recalls on cars with this engine
No NHTSA recalls we can tie to this engine's cars.
Known issues on record
- Turbo oil feed line recall (Recall). On 2018–2023 Stingers and 2019–2020 K900s with the 3.3T, the left turbo oil feed pipe and hose can wear out and leak oil onto hot parts, a fire risk. Fix: Dealer replaces the left turbo oil feed pipe and hose for free (NHTSA 24V169, Kia SC300). 5 owner complaints to NHTSA mention it (CK Stinger GT).
- Intake valve carbon (Parts seller). Direct injection never washes the intake valves, so carbon builds up. A parts seller writing about this engine in the Genesis G70 plans for cleaning at 60,000–80,000 miles. Fix: Walnut-blast the intake valves.
- Timing chain tensioner (disputed) (Owner-reported). Forum posts blame timing chain tensioners, but the same parts seller says no widespread defect is documented. Treat it as unconfirmed. 1 owner complaint to NHTSA mention it (CK Stinger GT).
Sources: NHTSA recall 24V169: 3.3T left turbo oil feed pipe may leak (2018–2023 Stinger, 2019–2020 K900), ThreePiece: every Genesis G70 common failure (same 3.3T engine, 2026). The same list as on the Stinger GT page.
Every US version with this engine
| Car and versions | Years |
|---|---|
| Kia Stinger GT Stinger AWD, Stinger RWD | 2018–23 |
| Genesis G70 3.3T G70 AWD, G70 RWD | 2019–26 |
Engine code: G6DP. Power: 365 hp, factory figures. Versions and years: EPA (fueleconomy.gov). Sources: Hyundai Lambda engine.
Quick answers
What cars have the Hyundai Lambda II 3.3 twin-turbo (G6DP) engine?
In the US: the Kia Stinger GT, Genesis G70 3.3T, model years 2018–2026. See the version table for each one.
Is the Hyundai Lambda II 3.3 twin-turbo (G6DP) reliable?
Mostly yes. YouTube owner tone 54/100, #33 of 165 engines with a YouTube study (in the top third); no engine-related recall on record, 3 known issues 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 Hyundai Lambda II 3.3 twin-turbo (G6DP) make?
365 hp in factory figures, depending on the car.