Reconditioned Renault Master 2.3 dCi Gearbox

Has the Master 2.3 dCi gearbox changed across the M9T generations since 2010?

The 2.3 dCi has been fitted to the Master from 2010 through to the 2024 model year — a lifespan that conceals some genuine evolution. The M9T block comes in seven distinct codes — M9T 670, M9T 680, M9T 700, M9T 702, M9T 706, M9T 710 and M9T 716 — each corresponding to a different stage of development, particularly in terms of power output (from 100 to 170 hp depending on the variant) and electronic calibration. These codes, stamped on the engine identification plate, are the first thing to check before placing any order.

6-Speed Manual or Quickshift: what the first registration date tells you

Two gearbox families cover this engine: the 6-speed manual and the Quickshift (6-speed automated manual gearbox). The Quickshift was introduced mid-career for heavy-duty commercial use; it shares its mechanical architecture with the manual but incorporates a separate robotic actuator — which is not included in the reconditioned unit. The first registration date, cross-referenced with the M9T code, is therefore the only reliable way to identify which of the two is fitted to the vehicle: a Master from the early production run was almost exclusively fitted with the manual, whereas post-2014 versions may have been supplied in either configuration depending on trim level and market.

Known weak points over this period

On early M9T units (2010–2014), the primary shaft bearings and the 5th and 6th gear selector forks are the wear points most frequently reported under intensive commercial use. On the Quickshift, symptoms such as juddering or refusal to change gear are generally attributable to the actuator rather than the gearbox's internal mechanics: a differential diagnosis is essential before concluding that there is a failure in the mechanical assembly itself.