In the standard-wheelbase Panamera models, the new V6, which forms part of a new range of units developed in an engineering joint venture between Porsche and Audi, is claimed to provide fuel savings of up to 3.6mpg over its predecessor, although official consumption figures are yet to be revealed.
The new V6 petrol engine is also offered in the Panamera 4 Executive, which receives a wheelbase 150mm longer than that of the existing Panamera models at 3100mm, in a move that extends its overall length to 5200mm.
Further up the range is the similarly dimensioned Panamera 4S Executive, running a more highly tuned twin-turbocharged 2.9-litre V6 with 434bhp, and the Panamera Turbo Executive, which is fitted with a 542bhp twin-turbocharged 4.0-litre V8.
Also available is the Panamera 4 E-Hybrid Executive. It runs Porsche’s twin-turbocharged 2.9-litre V6 engine in combination with an electric motor mounted in the front of the standard eight-speed automatic gearbox, producing a combined output of 456bhp.
The four new long-wheelbase Panamera Executive models are more highly equipped than their existing standard-wheelbase siblings. Among their standard features are a panoramic roof, heated seats with electronic adjustment both front and rear and an adaptive air suspension system with variable damper control as part of Porsche’s so-called Porsche Active Suspension Management (PASM) system.
The Panamera 4S Executive and Panamera Turbo Executive also receive rear-wheel steering and soft-close doors, with the latter model also receiving four-zone climate control, ambient lighting and LED main beam headlights with Porsche Dynamic Light System.
As an option, the new-for-2017 Panamera Executive models are available with a newly developed rear centre console. It can be equipped with two integrated folding tables and an antenna connection for smartphones.
The new centre console is offered alongside the latest generation of Porsche’s rear entertainment system. It includes two removable 10.1in tablet-style monitors set within the backrests of the front seats.
Pricing for the new Porsche models starts at £66,386 for the Panamera, rising to £69,412 for the Panamera 4. Further models include the Panamera 4 Executive at £76,034, Panamera 4 E-Hybrid Executive at £84,838, Panamera 4S Executive at £98,672.00 and range-topping Panamera Turbo Executive at £122,480.
Given the breadth of the expanded Panamera range, the model's rivals span everything from the BMW M6, Mercedes-AMG CLS 63 and even the Aston Martin Rapide S, which costs close to £20k more than the range-topping Porsche.