Naturally, as with the Astra, the kerb weight advantage is of significant benefit to the car’s dynamics.
In the smaller hatch, Vauxhall used the reduction in mass to make a much more engaging and agile car than before; in the larger Insignia, the pay-off is inevitably smaller, but much that the model now does better has its roots in the virtue of weight loss.
Most of this is manifested in the way the car feels a mite more limber than its stolid predecessor and therefore easier to navigate at low speeds.
But it is present, too, in a moderately heightened sense of composure, where the longer wheelbase has not overly stifled a modest deftness in the car’s very orthodox front-drive handling.
Entertaining or incisive it most certainly isn’t, yet with thickly accurate steering and no shortfall of directional stability, the Insignia is a broadly easy car in which to push on.
Its real strength, though, made plain enough by the long-legged way in which the model is sprung, is an affable ability to hoover up monotonous motorway miles.