
The fourth-generation EA888 was first introduced in 2006, featuring advanced technologies at the time, such as direct fuel injection, water-cooled turbocharging, and variable valve timing. This engine boasts the highest power parameters, but its main advantage lies in the balance between power and fuel consumption. It is available in two versions: a low-power variant and a high-power variant. Low-power version: Maximum output of 190 horsepower, peak torque of 320 Nm, paired with a 7-speed dual-clutch transmission, achieving 0-100 km/h acceleration in just 7.4 seconds. Another variant offers a maximum output of 245 horsepower, peak torque of 370 Nm, and is used in models like the all-new Golf GTI, achieving 0-100 km/h acceleration in 6 seconds. High-power version: Maximum output of 320 horsepower, peak torque of 420 Nm, with 0-100 km/h acceleration in just 4.9 seconds.

I remember the fourth-generation EA888 was launched in 2020, initially installed in the new Audi A4 and A6. Back then, I saw the new car brochures at the dealership and particularly noticed upgrades like the cylinder coating and dual injection technology. This engine addressed the oil consumption issue of the third generation, improved thermal efficiency to 38%, and achieved smoother transmission matching. Last year when helping a friend shop for a used A4L, I specifically checked the nameplate - only post-2020 models have the genuine fourth-generation engine.

Last year while organizing engine data, it was confirmed that the Volkswagen Group released the fourth-generation EA888 in 2020. The most noticeable change was relocating the turbocharger, integrating it into the exhaust manifold to improve thermal efficiency. I've reviewed overseas test reports showing this generation's power response is 0.3 seconds faster than the third-gen. Currently, models like the Tayron X and Tiguan L hybrid versions are using it, with production costs reduced by about 15% after localization.

The repair manual indicates that the fourth-generation EA888 engine serial numbers have started with 06K since 2020. The new design integrates the exhaust valve into the camshaft cover, reducing the probability of oil leaks. Last week, the repair shop encountered a Golf GTI fitted with this generation of engine, where the high-pressure fuel rail pressure was increased to 350bar, and the injector nozzle diameter was also reduced to 0.18mm.


