429bhp Mercedes-AMG CLS 53: first sighting ahead of Detroit reveal

Mercedes-AMG CLS53 to be first of several performance hybrids

The next-generation CLS had only been seen testing in non-AMG guise before now

New hybrids will sit beneath 63-badged models; CLS to share its six-cylinder-based powertrain with other models

Mercedes-AMG is just one month away from introducing a new petrol-electric hybrid line-up that’ll open with a 429bhp CLS 53 model.

Due to be revealed at the 2018 Detroit motor show in January, the hybrid four-door coupé is part of the latest-generation CLS line-up that was launched at the recent LA motor show and kick-starts a range that’ll sit below AMG’s 63-badged models.

The CLS 53, spotted testing on the public road for the first time, is powered by a 3.0-litre straight six engine, as used by AMG’s 43 models, in conjunction with a 67bhp electric motor to produce a total of 429bhp.

Despite falling short of the current V8-engined CLS 63 S’s 577bhp, the hybrid six-pot model’s electric torque-filling ability should ensure performance is close.

This would clear space for the AMG GT four-door that’s due in 2018 as an entirely different model, inspired by the GT Concept of the 2017 Geneva motor show. The GT four-door will use a twin-turbocharged V8 engine, borrowed from either the AMG GT or E63, with a hybrid range-topper producing around 800bhp.

The hybrid CLS is expected to come with regenerative braking technology to help replenish its lithium ion batteries when on the move. This technology is already in use elsewhere in Mercedes’ range and would come as part of 48V electrical architecture.

The CLS 53 development car caught in the video above offers few clues as to what design changes we can expect with the AMG model. Most likely, it’ll receive AMG wheels, different bumpers and a lower ride height, but the car’s luxury focus should ensure the changes will be discreet.

Following the CLS 53, an E53 will be launched with the same six-cylinder hybrid powertrain. This will be the only powertrain available on AMG coupé and convertible E-Classes, while larger saloon and estate models will remain as E63s with V8 engines.

AMG boss Tobias Moers confirmed to Autocar in LA that the ’53’ nomenclature will feature exclusively on AMG models that use petrol-electric hybrid powertrains. Recent sales from Porsche, which has sold 60% of its latest Panamera in hybrid form, show that global market demand for high performance hybrids is surging.

Source: Autocar Online

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