Spy footage shows Bentley’s lightly facelifted Mulsanne is performing final testing and it will be joined by a long wheelbase model.

Spy footage shows Bentley’s lightly facelifted Mulsanne is performing final testing and it will be joined by a long wheelbase model.

The regular Mulsanne appears to be getting a slightly wider front grille along with a few minor tweaks to both front and rear bumpers, but nothing of great significance. The outer headlight clusters seem to sit a little bit higher and in line with the inner headlights for a more cohesive look which we think suits the model better.

It’s obvious from the attached spy images and video the blue prototype carries a longer wheelbase that makes the Mulsanne look absolutely massive. While the standard variant has an overall length of 219.4 inches (5575 mm), we expect the LWB model to be stretched by around 8 inches (200 mm). Most of the added length will be in the wheelbase that will grow considerably from the current 128.5 inches (3266 mm). This will obviously impact the weight of the model which is bound to increase over the regular model’s 5,919 pounds (2,685 kilograms).

Besides applying a mild facelift on the regular model and launching a LWB derivative, Bentley is also preparing a Mulsanne Grand Convertible. While the fixed roof models are programmed for an official reveal in March at the Geneva Motor Show, the open-top model will arrive later this year.

It remains to be seen whether Bentley has plans to make some changes to the biturbo 6.75-liter V8 engine which currently puts out 505 horsepower and 752 pounds-feet (1,020 newton meters) of torque. In the standard Mulsanne it is good enough for a sprint to 62 miles per hour (100 kilometers per hour) in 5.3 seconds and a top speed of 184 mph (296 kph). However, the long wheelbase and convertible are going to be a tad slower due to the increased weight.

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2016 Bentley Mulsanne and long wheelbase caught in motion [video]