• Twin beds over a garage create a defined rear sleeping zone: Each sleeper gets their own space, and the elevated design allows for generous storage underneath.

• Drop-down bed keeps the lounge usable by day: The main living area stays open until bedtime, avoiding permanent bed dominance at the front.

• Diesel heater supports year-round use: Quick, reliable heat makes colder trips far more comfortable without heavy gas use.

• Only four travel belts for five berths: Not all sleeping occupants can travel together.

• Drop-down bed lowers into the main living area: Once deployed, headroom and movement through the lounge are reduced.

The 644 appeals to buyers who want proper rear beds and meaningful storage without stepping into a much larger A-class. The garage layout, diesel heating, and modern cab spec make it easy to position as a capable touring motorhome rather than just a holiday vehicle. It’s the sort of model people often come in asking about specifically, particularly those who’ve decided twin beds and storage are high on their list.