Noise when accelerating on Mazda: causes by model and engine

Documented faults, from most to least important

Severity × frequency. Below each one, the Mazda models it appears in.

- High severityFrequency: Very frequent1.6 HDiTurbo failure through lack of lubrication (carbon deposits and union filter)On the 16-valve 1.6 HDi/TDCi engines (2004-2011) the turbo can seize because carbon deposits from the oil clog the mesh filter in the union that feeds it. It is a serious, repeat fault: if only the turbo is replaced without cleaning the circuit, it fails again.Repair (garage): €700–€1,050
In 3 I
- High severityFrequency: CommonSkyactiv-DTurbo wear or failure from lack of lubricationThe two-stage sequential turbo of the 2.2 Skyactiv-D appears as one of the most cited faults by CX-5, Mazda6 and Mazda3 owners, especially when the oil has lost lubricating ability through dilution or when the camshaft on 2013-2014 units sheds metal particles.
In 3 III, 6 III, CX-3, CX-5 I and CX-5 II
- High severityFrequency: OccasionalMZR-CDTurbocharger wear or failureThe MZR-CD's variable-geometry turbo appears among the faults cited by Mazda6 and Mazda3 owners, with cases of whistling, loss of boost pressure and, in one documented case, a repair of over €3,600 in France; it tends to be made worse if the oil has previously been diluted.
In 3 I, 3 II, 5 I, 6 I, 6 II and CX-7

By Mazda model

Open yours to see only the faults that affect it, by engine and by year.

Engines and gearboxes involved

Frequently asked questions

Noise when accelerating in a Mazda: what could it be?

In 11 models from Mazda there are 3 documented faults that cause this symptom (noise when accelerating). The most important: turbo failure through lack of lubrication (carbon deposits and union filter), turbo wear or failure from lack of lubrication and turbocharger wear or failure. Each fault has its own page with the affected years and versions, the cause and how to check for it.

Which Mazda models have the most faults with this symptom?

Mazda 3 I (2 faults), Mazda 6 I (1 fault), Mazda 5 I (1 fault) and Mazda CX-7 (1 fault).

Which Mazda engines cause it?

1.6 HDi (1 fault), MZR-CD (1 fault) and Skyactiv-D (1 fault).