Mercedes-Benz is shuffling the E-Class’ and CLS’ engine range in the UK, with new power units going on sale effective immediately, as first deliveries are expected in October.

Among the changes is the E 400 4Matic getting axed in favor of the E 450 4Matic as far as the Coupe and Cabriolet models are concerned. The E 450 Coupe is priced from £50,900 ($65,731), while the Cabrio costs upwards of £55,395 ($71,536).

With 367 PS (362 HP) and 500 Nm (368 lb-ft) of torque at their disposal, the E 450 Coupe and Cabriolet can rocket to 62 mph (100 km/h) in 5.6 seconds and 5.8 seconds respectively, while being limited to a top speed of 155 mph (250 km/h).

Meanwhile, the E 400d 4Matic is replacing the E 350d, offering 340 PS (335 HP) and 700 Nm (516 Nm) of torque, taking the Coupe version to 62 mph in 5.1 seconds, and the Cabriolet in 5.2 seconds. Top speed is again 155 mph.

For more practical purposes, there’s the E 400d 4Matic All-Terrain, which now replaces the E 350d version. It’s priced from £64,445 ($83,223) and it comes with the same 3.0-liter inline six-cylinder engine as its two-door siblings. While power and torque figures are identical to the ones mentioned above, the All-Terrain will need 5.4 seconds to reach 62 mph from a standstill.

This rugged version of the E-Class also gets a 360-degree camera, Air-Balance package, Energizing Comfort package and wireless phone charging – useful if you have a compatible smartphone.

As for the Mercedes CLS 350, priced from £52,625 ($67,958), it features an all-new four-cylinder petrol engine, producing 299 PS (295 HP) and 400 Nm (295 lb-ft) of torque. It also comes with EQ Boost technology, which generates a further 14 PS (13 HP) and 150 Nm (110 lb-ft). In a straight line, it will hit 62 mph in 6 seconds flat.