2021 Adria Matrix Supreme 670SL motorhome

The quality remains the same

Adria has been working hard on making its Matrix motorhomes even more practical for the 2021 season. Matrix signals it’s a drop-down bed model, while Supreme is the top trim level and 670SL tells us its floorplan features twin rear single beds set over a garage.

But, it’s the massive raft of improvements for 2021 that make all the difference in what Adria calls its “new generation” of motorhomes.

That body on the Matrix Supreme has gained some height so the curvature of the roofline housing the drop-down double bed isn’t as pronounced.

At the same time, the extra centimetres also translate into more interior room throughout the living quarters as well as more space in what was already a pretty extensive garage, accessible by bigger doors on both sides.

In the garage itself, more thought has been given to storage details. There’s now a dedicated space for the base vehicle’s toolkit, for example. Plus a central drawer (also accessible from inside), shelving and external shower connection.

You won’t see it, either, but there’s now a technical double floor in the Matrix Supreme – housing lots of wiring, heating pipes, fresh water tank access, and storage, as well as optimising insulation.

External enhancements also include everything from a new overcab pod to exclusive LED tail lights.

That’s Hartal’s latest wider habitation door, with larger window and a lower exterior handle as well as a much-improved waste bin on the inside, while the low-level service hatch includes a mains hook-up point and TV aerial connector, as well as space to stow the mains lead itself.

Inside the Adria Matrix Supreme motorhome, it’s all about detailed improvements to what was already an impressive unit. At the very back, those single beds can actually be easily converted into a double, thanks to a central slide-out section.

Note the clever arrangement of the steps, too, at the bed end, where you’ll also find easy-access drawers rather than the previous wardrobe on the offside.

Over the lounge, the drop-down double bed has been improved. It now operates by cables (it was straps previously) and is slimmer, to give more lounge headroom as well as improved electrical operation.

Often, motorhomes with drop-down beds can suffer from lack of light. It’s hardly an issue in the Matrix – that revised, more streamlined overcab pad also houses Adria’s largest opening sunroof yet.

The 670SL lounge features an L-shaped settee where a side section simply flips down easily for travel. And Isofix is now standard on the forward-facing travel seats.

The kitchen format remains the same, but there’s now a thinner worktop and concealed extractor unit over the hob. There’s also a splash panel with a brushed metal-effect finish.

The redesigned washroom facilities are about more than their new curves, although these do enhance any feelings of space. There’s an oval countertop basin with generous lockers to its left and underneath, and the shower cubicle has new panelling as well as a more water-efficient spray outlet.

There are plenty of other upgrades in the Matrix Supreme. The revised media wall includes housing for TVs up to 32in, plus Bluetooth transmitter for hidden speakers, including a sub-woofer (you could also connect to a Bluetooth soundbar).

The solenoid switch behind the cab passenger seat for opening the wastewater tank is yet another useful feature.

Upper level rails include adjustable lights and USBs that can also be moved to other strips. You can even buy more, if needed. Plus, ambient lighting now has a dimmer function.

Supreme specification means items like Alde central heating are standard (the fresh water tank itself has been relocated between the axles). Automatic transmission for the standard 140bhp engine is now available – before, you’d have had to upgrade to the 160bhp engine – but it’s still a pricey option.

Despite all this, you’re unlikely to buy any Adria motorhome without either options Packs 1 or 2 (compare for yourselves). And there’s the equally vital Luxury Pack. In other words, budget to spend at least some £5,000 on top of the initial price. It’s worth it.

In this video we take a look around the 2021 Adria Matrix Supreme 670SL motorhome.

Verdict: Lots of improvements to what was already an impressive vehicle

Plus: Clever detail upgrades, good build quality

Minus: Options packs bump up the price

In-a-nutshell: Lives up to its name

There’s more information on the Matrix motorhome range on the Adria website. Find out more about insuring this or your current motorhome on our motorhome insurance discounts page.

Alternatives: Auto-Trail Delaware S, Bürstner Lyseo TD Harmony Line 690G, Rapido 666F, Swift Kon-tiki Sport 587