Geely JLH / BHE

Geely's turbocharged petrol engines, in 1.5 three-cylinder and 2.0 four-cylinder forms — the powerplants of the Coolray, Tugella and Atlas.

The fact that gives them their context is corporate: Geely owns Volvo, and these engines were developed with Volvo's engine organisation and share architecture with the Drive-E family. That relationship is genuinely useful diagnostically, because Volvo material on the equivalent Drive-E engine is far more plentiful and frequently applicable.

In service they behave as modern downsized turbo engines do — intake-valve carbon, oil-dependent turbocharger life, and cooling-system components working close to their limits. As with Great Wall, independent technical documentation is thin relative to European equivalents, which raises the value of the shared Volvo lineage and of community-contributed experience.