It'd be easy, but wrong, to think all the platform-shared Stellantis cars are exactly the same beneath the surface. Citroen's 'progressive hydraulic' dampers are unique to the C-cars. DS has its own camera-based adaptive system, for instance.

Those dampers allow the C5 X to be super supple over most straight line bumps, but give the suspension more discipline when it's in danger of reaching full excursion. Some of the previous efforts, the C5 Aircross for example, have felt slightly baggy in a straight line, but here the dampers, bushes and bump stops work in much cleaner harmony.

The steering and roll control are nicely calibrated, so it's easy and relaxing to trace your line through long motorway curves, but the nose is surprisingly happy to swing you through tighter stuff and takes a good while to lapse into understeer. The rim weighting's light but if you don't grip too hard you'll find encouraging traces of road feel – a depressingly scarce commodity on the rival crossovers.

Remind me of my engine options...

You can get the C5 X with the 128bhp three-cylinder 1.2-litre plus eight-speed auto, a 1.2-litre 48V mild hybrid setup, or finally a PHEV which gets a 178bhp 1.6-litre four-cylinder and sandwiches an e-motor between combustion engine and auto 'box.

The 1.2 is torquey for its size and much better sound insulated than in the firm's smaller cars. So it actually does an OK job, better than its 10.4-second 0–62mph time indicates anyway. The auto 'box is pretty smooth and has a manual mode with paddles. It only feels lethargic if you're trying to overtake up a long hill.

As mentioned on the previous page, we haven’t tried the mild hybrid in this car, but it’s the same setup as you get in the C5 Aircross, which we have. It pairs the familiar 1.2-litre engine with a six-speed DCT transmission featuring an integrated electric motor, for improved performance (0-62mph takes 9.7 seconds) and economy (Citroen claims up to 15 per cent improvement). Click here to find out more.

And the plug-in hybrid?

The PHEV is good for up to 39 miles of WLTP electric range, and in that mode its silence goes well with the mood of the car. Full bore acceleration in petrol-electric mode is strong, but it doesn't exactly relish full throttle. The transmission gets confused, sometimes flailing down the gears and spiralling the revs, sometimes shifting up too far on the way into a corner. There are shift paddles but it immediately defaults back to auto mode, so it'll counter your instruction almost as soon as you've issued it.

And while the pure ICE version has reasonably predictable brakes, the hybrid gives uncertain slowing and jerky stopping. Not unique to this car of course: most hybrids have trouble coping with the reverse-torque of an engine and the regeneration function of the motor while the gearbox shifts down, all while blending the right amount of disc friction. We couldn't do that calculation progressively in real time, and nor can the C5 X.

So not much fun then?

Since it denies you progressive control of either acceleration or deceleration, the hybrid becomes wearisome on a bendy road. Good for motorway or town though.

Worth saying that the hybrid versions also get adaptive dampers with normal, comfort and sport settings, which slightly improve urban and motorway comfort. They sharpen up corner entry a little too, but as noted cornering isn't the hybrid's thing so it's a moot point, and the passive system in the combustion cars makes the C5 X way more comfortable than rivals even on bumpy UK roads with the standard 19in wheels.

What about running costs?

On our first drive of the car we did a number of mixed road trips of around 75 miles or so in the base 1.2-litre petrol and in the plug-in hybrid. The entry petrol did 36mpg (versus Citroen’s claimed 47mpg), while the hybrid drained its battery and did 51mpg (versus Citroen’s official 202mpg – as ever, take that with a pinch of salt), with a similar story on a jaunt from London to Devon and back returning 53mpg.

For reference, Citroen claims 54mpg in the mild hybrid, so we’ll update this to let you know how realistic that is as soon as we’ve tried it.

Most versions have a full suite of driver assists. The Level 2 motorway system is easy to use, and pretty good at finding the lines it's meant to be guiding you between. The steering nudges are too bitty and aggressive though. Other cars can ease the course more smoothly.

2.5

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