Great Wall Motors GW4

inline-4 · turbocharged · petrol · 2013–present

Also known as: gw4b15, gw4c20, gw4g15, 1.5 turbo haval, 2.0 turbo gwm, gw4n20, gw4c20nt, gw4g15b, gw491qe, gw4c20b, gwm4b15d

Great Wall Motor's turbocharged petrol fours, in 1.5 and 2.0 litre forms — the engines of the Haval H2, H6 and Jolion and of the Poer pickup, and among the most numerous Chinese engines in export markets.

They are conventional modern designs — direct injection, turbocharging, chain drive — and their diagnostic profile follows the pattern of any engine of that description: intake-valve carbon at mileage, turbocharger life tied to oil condition, and sensitivity to fuel quality. What differs is the documentation environment: independent technical material is much thinner than for European or Japanese equivalents, which raises the value of community write-ups and of the generic corpus.

That scarcity is worth stating rather than glossing. Where a European engine's known failure can be looked up, a fault on a GW4 more often has to be diagnosed from first principles — which is precisely the situation a community layer attached to an engine node is built to improve.

Cars fitted with this engine

8 generations, across 1 make. From the authored catalogue — an absent car means the catalogue has not reached it, not that the engine was never fitted.

Great Wall Motors

Information, not instruction

CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.

Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.

Posted about this engine

Be the first to write this up

Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.

What makes one worth reading:

The car — make, model, year and engine. The same fault behaves differently on each.
What you measured, not only what you replaced.
What actually fixed it — or that nothing did, which is worth knowing too.