The Toyota Corolla in present form has been in the market since 2013, and the marketplace has stepped up its game by a long way – many competitors in their various, updated guises have since arrived.

Rumours are that the production version of the Corolla test mule seen here will be released as a concept model by the end of this year. This new model is also said to be a global model, in contrast to the various models in different markets which bear the Corolla nameplate now. As such, it will be built upon Toyota’s latest TNGA modular architecture, which first appeared on the latest Prius.

Reports say that the new Corolla’s underpinnings won’t necessarily mean less weight, although the chassis will be made more rigid, in order to improve NVH as well as ride and handling. Particular emphasis appears to be paid to the latter half of the equation, with the new car’s use of stiffer dampers aimed at “a nicer driving experience.”

Exact figures haven’t come by yet, but the upcoming Corolla is expected to grow in size, possibly in wheelbase as well to increase cabin space. Meanwhile on the powertrain front, the upcoming Toyota Corolla is expected to adopt the global model approach for its engines as well, with a 1.5 litre, inline three-cylinder engine expected to feature in the base model. A turbocharged version of the same mill is also expected.

The 1.5 litre petrol inline-three is expected to produce 100 hp from the base variant, up to 180 hp in turbocharged guise for the US market, according to various reports. Europe and other markets are expected to also receive a 1.4 litre diesel powerplant, with upgrades to its cylinder head and elsewhere for better fuel efficiency. Across both types, the global powertrain line-up could be differentiated between markets via the use of different transmission options.