Features
The 2023 redefines premium motorhome travel, combining sophisticated European craftsmanship with the power and refinement of the Mercedes-Benz Sprinter platform. Designed as Adria’s flagship A-Class motorhome, the Supersonic 780 SL delivers exceptional comfort, intelligent innovation, and striking automotive-inspired styling for travellers who expect uncompromising luxury on every journey.
At 7.83 metres in length, the Supersonic 780 SL offers a spacious and beautifully balanced interior layout featuring luxurious twin rear single beds above a large garage, an electrically operated drop-down double bed, a designer central lounge, and a premium split washroom with separate shower facilities. Inspired by luxury yachts and contemporary interiors, the cabin showcases elegant lighting, premium upholstery, panoramic glazing, and meticulously engineered storage solutions throughout.
Built on the latest Mercedes Sprinter chassis with AL-KO low-frame technology, the 2023 Supersonic combines effortless touring performance with superior driving refinement. The standard 170bhp diesel engine paired with a smooth 9-speed automatic gearbox delivers exceptional long-distance comfort, while advanced chassis engineering and double-floor construction provide outstanding stability, insulation, and year-round usability.
Inside, every detail has been designed for elevated living. The expansive kitchen includes premium appliances, a 177-litre fridge freezer, generous preparation space, and intelligently secured soft-close storage. The luxurious lounge creates a true residential atmosphere with contemporary furniture design, panoramic visibility, and seamless integration between relaxation, dining, and entertainment areas. The Alde heating system, advanced multimedia controls, smart energy management, and high-capacity fresh and waste water systems ensure comfort and independence wherever the road leads.
The exterior styling is equally impressive, with sleek silver bodywork, flush-fitting windows, black alloy wheels, integrated awning, and bold automotive detailing that gives the Supersonic a commanding road presence unlike any traditional motorhome. Combining innovation, craftsmanship, and first-class touring capability, the 2023 Adria Supersonic 780 SL stands as one of Europe’s most desirable luxury motorhomes for discerning travellers seeking comfort without compromise.
Specification Highlights Include -
Included with this vehicle is 12 months warranty and a fresh MOT. At Abacus Motorhomes, we pride ourselves on being your one-stop motorhome shop.
As an NCC-approved dealer and main agent for Adria and Swift, all vehicles are fully inspected by our AWS NCC-approved workshop, PDI’d, and supplied with a comprehensive handover. We also offer flexible finance packages, part-exchanges, full servicing, warranty, and ongoing support.
Also included with every purchase, a free 12-months Caravan & Motorhome Club membership, exclusive VIP Owners Club access, and a complimentary New Forest campsite stay.
Every effort has been made to ensure the accuracy of the information provided. However, errors and omissions may occur. We strongly recommend that all customers inspect the vehicle in person and verify all details prior to purchase.
When you buy a pre-owned motorhome from Abacus, you will take possession of a well loved vehicle that has been fully checked for defects.
Each vehicle undergoes a 150 point check to ensure the safety and comfort of you and your passengers, and comes with a 12 month platinum UK wide warranty.
Caravan and Motorhome Club members can access over 2,700 campsites across the UK and Europe and can make hundreds of everyday savings on activities, products and more. As a member of the club you'll save £15 per night every time you stay on one of their quality UK Club campsites.
Visit the Caravan and Motorhome Club website to find out more by clicking here.

You're welcome to call in to see us anytime, but we highly recommend that you make an appointment first.
Having an appointment ensures that there is a knowledgeable staff member available to assist you. This is particularly important if you have specific questions or if you're looking for expert advice on various aspects of the motorhome, such as its features, maintenance, or financing options.
To make an appointment please contact the Sales Team on 01264 319990 or send us a message by clicking here.
Only
£129,995
Specifications
Manufacturer: Adria
Model: Supersonic
Trim: 780 SL
Mileage: 7200
Layout: Fixed Bed
Doors: 2
Passengers: 2
License Type: C1
BHP: 170
Berth: 4
Internal Height (mm): 2040
External Height (mm): 3200
External Width (mm): 2305
External Length (mm): 7830
GVW (kg): 4500
Model Year: 2023
Max Towable Mass - Braked (kg): 2000
Wheelbase: 4300
Chassis Manufacturer: Alko
Fuel Type: Diesel
Transmission: Automatic
Enquiry about this vehicle