Reconditioned Opel Astra Gearbox

Opel Astra Gearbox: from the 5-speed manual to the Easytronic – how the range changed between 2002 and 2023

Across the entire Astra production covered by this catalogue, three transmission types are shared across the engine range: the 5-speed manual, the 6-speed manual and the Easytronic. The Easytronic automated manual gearbox appears only on the 1.0 Turbo (codes B10XFL, B10XFT); all other engines are fitted exclusively with manual gearboxes. The 5-speed is confined to entry-level variants: the 1.4 naturally aspirated (A14NET, A14XEL, A14XER, Z14XE, Z14XEP), the 1.7 CDTi on certain model years (A17DTE, Z17DTL, Z17DTH, Z17DTR), the 1.3 CDTi (Z13DTH) and the 2.2 (Z22SE, Z22YH). The 6-speed is fitted to the more powerful or more recent engines: the 1.4 Turbo, 1.6 Turbo, 2.0 Turbo, 1.9 CDTi, and the 1.2/1.2 Turbo of the latest generation.

Why the gearbox type alone is not enough to identify the correct part

Several engines coexisted with both gearbox ratios depending on the model year or variant: the 1.7 CDTi is the clearest example, with five distinct engine codes (A17DTE, A17DTR, Z17DTH, Z17DTL, Z17DTR) spread across both 5- and 6-speed units. The 1.3 CDTi (A13DTE, Z13DTH) follows the same logic. In these cases, the engine code stamped on the block is the only reliable reference for determining which gearbox matches the vehicle: two Astra 1.7 CDTi models from the same apparent model year may take different transmissions depending on power output and market.

Easytronic: a special case not to be confused with others

The Easytronic is an electro-hydraulically controlled automated manual gearbox: it is sold without the actuator unit, which is subject to a separate diagnostic process. The symptoms associated with it (jerking, refusal to change gear, warning light on) do not necessarily indicate a mechanical fault with the gearbox itself. On the 1.0 Turbo in particular, it is essential to identify the source of the fault before placing any order. The 1.0 Turbo models fitted with a 5-speed manual gearbox (same code family B10XFL, B10XFT) do not share the same gearbox reference as the Easytronic version.