Infiniti’s 3.0L twin‑turbo V6 (VR30DDTT) used in the Q50 and Q60 delivers strong performance but has developed a pattern of reliability concerns. Owners report heat‑soak and turbo cooling problems, along with high‑pressure fuel pump (HPFP) failures that can cause drivability issues, stalling, or no‑start conditions. Problems are most commonly reported on early production years and heavily driven or tuned vehicles.
| Year(s) | Make | Model | Should Purchase? | Notes | |
|---|---|---|---|---|---|
| 2016 2017 2018 2019 2020 2021 2022 2023 2024 | Infiniti | Q50 3.0T (VR30DDTT) | Caution |
Engine: 3.0L twin‑turbo V6 – VR30DDTT Issues: heat‑soak, turbo cooling problems, high‑pressure fuel pump failures Notes: heat‑soak can cause power loss after hard driving; turbo coolant circuit and intercooler efficiency are critical; HPFP failures lead to rough running, loss of power, and possible no‑start Legal/coverage: subject to TSBs and goodwill repairs in some cases; check warranty history and software updates |
|
| 2017 2018 2019 2020 2021 2022 2023 2024 | Infiniti | Q60 3.0T (VR30DDTT) | Caution |
Engine: 3.0L twin‑turbo V6 – VR30DDTT Issues: turbo heat‑soak, inadequate cooling under sustained load, HPFP failures Notes: similar failure pattern to Q50; Red Sport and tuned trims more likely to expose thermal and fueling limits Legal/coverage: owners report HPFP replacements and turbo‑related repairs under warranty/extended coverage |
VR30DDTT issues have not (yet) produced the same scale of class‑action activity as Nissan’s CVT or VC‑Turbo problems, but high‑pressure fuel pump failures and turbo‑related drivability complaints have led to TSBs, software updates, and warranty repairs. Some owners have reported repeat HPFP replacements and extended diagnostic efforts to resolve heat‑soak and fueling concerns.