0.9 TCe engine: faults and reliability

The 0.9 TCe is a three-cylinder in-line petrol engine, turbocharged, with an intercooler and indirect multipoint injection (not direct injection), 898 cc displacement and a chain-driven timing system. Renault introduced it in late 2012 with the launch of the Clio IV, under the internal code H4Bt, delivering 90 hp and 135 Nm of maximum torque. It is the work of the Renault-Nissan Alliance, within its "H" engine family.^[2][4]

It later spread to the Renault Captur and Twingo III, and to the Dacia Sandero II and Logan II. Through the strategic alliance between Renault-Nissan and Daimler it also powered the third-generation Smart ForTwo and ForFour (C453/A453 and W453), where Daimler identifies it with the code M281. The same block, with the Nissan code HR09DET, also powers the Nissan Micra (K14, 2017-2022); we do not include it as an application on this page because it falls outside the scope requested for this document, although it belongs to the same technical family.^{[2][3][6][7][8]}

According to the article on the Renault-Nissan Alliance's "H" engine family, the 0.9 TCe is considered "one of the most reliable petrol engines produced by Renault in the last decade", with faults that mainly affect peripheral items (water housing, sensors) and not the engine block itself. The fiches-auto.fr reliability database, with more than 600 reviews analysed, confirms this positive picture and places it clearly ahead of its larger-displacement sibling, the 1.2 TCe, which does carry a much better-documented oil consumption and rate of chain problems.^[1][2]

In a later revision the engine gained an overboost function that briefly raises output to around 95 hp and torque to around 145 Nm under hard acceleration, although the nominal figure stays at 90 hp and 135 Nm; there is no documentation that this change affects the engine's reliability.^[2][4]