Benjamin Davies

See other motorhome reviews written by Benjamin Davies

Read the Practical Motorhome review of the Marquis County Sussex Duo review, which is based upon the Auto-Sleeper Warwick Duo


The Marquis County Sussex Duo is built exclusively for Marquis Motorhomes by Auto-Sleepers, the dealer’s sister company within the Auto-Sleepers Group.

It’s based heavily on the Auto-Sleeper Warwick Duo, which was introduced for the 2009 season, but carries a good deal more kit as standard, making it very much a luxury, high-end camper. The most eye-catching items over and above the standard Warwick get-up are air-con for the living quarters, twin airbags and cab air-con. It chimes perfectly, then, with the stated aims of the team behind 2009’s management buyout of the Auto-Sleepers Group that they’d be focusing on boutique-style products. And it’s clearly a strategy that’s paid off: van conversions are very much back in fashion. The Sussex Duo also won the prestigious Caravan Club Design and Drive Award 2010 in its category for van conversions over £40,000, seeing off stiff competition from the likes of the Autocruise Alto, Murvi Morocco and the VW California. High praise 
indeed, then.

This model is aimed at those down-sizing from a larger coachbuilt, who don’t want to scrimp on any of the luxuries they’ve enjoyed in their last ’van. Manageable dimensions, excellent driving characteristics, road holding and rigidity, and considerably better fuel economy than coachbuilts thanks to their streamlined design, van conversions make an appealing case in these lean times.

The Sussex Duo is one of a fairly new breed of end-lounge, two-berth, twin sofa campers and the Duo’s main selling point is that its sofas are a generous 1.9m-long (6’3”). These make for better lounging and reflect a trend in coachbuilt motorhomes towards catering for couples who prefer twin single beds on tour. And if you want a double, it’s a much easier bed to make up than the double bed you find in more traditional front-lounge van conversion layouts. Plus, there’s the benefit of easy access through both the front and rear doors.


Those flush-fitting black side windows are certainly eye-catching, and give the Sussex a distinctive look. They’re single-glazed units and, although they claim Athermic (heat retention/repellent) qualities, we’re still to be convinced about their performance versus the usual acrylic, double-glazed units we’ve come to expect these days, even in van conversions.

The paintwork here is described as ‘golden white’, and with the colour-coded bumper it is certainly more head turning than ‘off the shelf’ white.

We’ve touched on some of the extra spec already, but didn’t mention the reversing camera, the external TV and aerial points, and the awning, all fitted as standard.

Electric hook-up, water inlet and waste-water drainage are all sensibly sited on the driver’s side, out of the way of those enjoying a spot of al fresco supper under the awning, so it’s a shame the Thetford cassette has to be accessed from the nearside.

The rather small fresh- and waste-water tanks (at 69 and 40 litres respectively) are both underslung, as is a 20-litre LPG tank. So no more lugging heavy cylinders around to replace them – simply drive up to a fuel station that sells autogas and fill up.

On the road

The Sussex Duo is based on the LWB Peugeot Boxer van, with the factory steel high-top, and powered by the 2.2-litre HDi 120bhp engine as standard.

Auto-Sleepers has opted to fit all of its Dorset and Sussex models with AL-KO’s Airtop suspension. The AirTop units comprise a pair of ‘bellows’ fitted at both ends of the rear axle, on the leaf-sprung suspension supports. A dual pressure gauge is fixed to the passenger seat base in the cabin. Those who’ve complained about the Boxer/Ducato giving a too-firm ride would do well to give this a spin.

The six-speed manual gearbox delivers the power smoothly to the front wheels, there’s plenty of acceleration to call upon throughout the ranges, and it’s as accomplished in stop/start traffic as it is on the open road.

Lounging & dining

The dark, curved furniture 
is UK-sourced and complements the ‘Leya Brown’ upholstery beautifully. Four scatter cushions and bolster cushion positively invite you to spread out on the settees, making this an end-lounge layout that will be hugely attractive to couples.

A flatscreen TV hinges down from beneath a locker on the offside, and is sensibly sited where the sofa meets the kitchen: perfect for a spot of feet-up viewing of your favourite programme. A mini-table, clipped to a rear door rail, can slide and extend to offer a flat surface for a couple of mugs of tea and there 
are drop-in carpets over the vinyl flooring.

The freestanding table is housed above the cab, and clipped in place during transit. The surface is 90 x 45cm and will happily seat four people for dinner, with a little knee room to spare.

The darkened windows don’t open (except for two sliding windows up front: one behind the hob in the kitchen, the other on the sliding entry door). That’s where the Dometic habitation air-conditioning unit really earns its keep in summer months. Those windows look great, but rather darken the interior. Lighting is courtesy of 12V units in the ceiling (which impinge a little on headroom) plus a mix of adjustable reading lamps and LED downlighting.

There are just two mains plug sockets in the ’van – one in the kitchen, and one on the driverside seat bunk, to service our ever- increasing consumption demands.


The Sussex Duo’s kitchen is as good as any in a van conversion, and a match for those offered in many coachbuilt alternatives. It’s positioned along the offside and offers generous equipment levels and worktop space, plus excellent storage.

It’s an ergonomic success, with everything in the right place and nothing missing, from the full cooker (with electric hotplate to preserve your gas supply on site), to the extractor unit and the microwave oven at eye level.

The large stainless-steel sink and drainer have a glass lid that doubles as a chopping board, and below the worktop is a 77-litre fridge with freezer compartment. And, of course, it comes with Auto-Sleepers’ trademark crockery set and crystal wine glasses.

As ever, it’s the attention to detail where they score highly.


It’s a choice motorcaravanners increasingly demand: the option of setting up the beds as twin singles or a double bed. Whatever your preference, you benefit here from easy-to-manoeuvre slatted bed bases; the feet of the bed extensions are screwed for adjustment, too.

The singles measure 6’3” x 2’6”, and the double is a massive 6’3” x 6’1”. The wardrobe over the nearside single bed affords 40cm clearance for feet.

In these days of fixed blinds and insulation screens for cab windows, the use of a curtain (even though it’s lined) seems rather old fashioned but welcome. However, we’d prefer the curtains to be black-out curtains – as with our previous Auto-Sleepers test ’van, they let rather too 
much light in of a morning. Also, we’d like to have seen more press studs for better privacy.


The washroom is the most compromised area, and we’d guess most owners of a luxury ’van like this would opt instead to use the site facilities unless they were ‘off-grid’.

Some describe them as little more than emergency facilities, but we reckon the Sussex Duo’s unit has a little more going for it than that. There’s a bench toilet, and a fold-down sink, and the shower tray has two plugholes, for better draining on those occasions when the ’van isn’t completely level when pitched up. And there are sufficient hooks and towel rails for two.

As a shower cubicle, our testers could just about make do in the 85 x 60cm confines (although the 85cm is reduced to 50cm at foot level by the toilet bench).


All the locker doors have positive catches and provide as good a level of storage as you could reasonably expect in a high-top van conversion. The rear opening doors allow you to store longer items toward the rear at floor level, without having to walk them through the ’van.

There’s a storage safe, perfect for valuables, concealed deep within the kitchen unit. A full-size wardrobe is more than ample for two, and having the water tanks under the vehicle means lots of storage space in both settee lockers (for those planning all-season excursions, frost protection is an option).

You can gain access to the under-bunk storage by raising the seat bases, but there’s also a neat storage drawer under the driver’s side rear seat bench. Safety is clearly a premium, too, with items such as smoke and carbon-monoxide alarms, and a fire extinguisher, fitted 
as standard.

Technical specs

Travel seats2
Waste water40L
External Options
Integral awning, External TV output
Kitchen Equipment
3-burner gas with electric hot plate, Combined Oven/Grill, Microwave, Extractor fan
Thetford C-402 bench toilet, Shower curtain
Truma Electric/Gas Blown air heater, Truma Electric/Gas water heater


This is a top-quality high-top with rear-lounge layout that’s sumptuously equipped, thoughtfully appointed and lovingly finished. Yes, it’s expensive, but you get what you pay for.



  • Habitation air-con; reversing- and rear-view cameras; sumptuously equipped and furnished


  • Small washroom; most of the tinted windows don't open and are single-glazed