Luggage Volume by Suitcase Size: What Actually Fits

Why volume figures mislead

Boot capacity is usually published as a single volume, measured by filling the space with small blocks. Real luggage is nothing like small blocks. A boot that swallows a large notional volume may still refuse two rigid cases if the aperture is narrow or the space is shallow and wide rather than deep and tall. This is why a number is a poor basis for a booking decision.

The better approach is to describe what you actually have. Three large cases, two cabin bags and a suit carrier is an instantly answerable question. A volume figure is not, because it says nothing about shape. Describe the pile you can see in the hallway rather than reaching for an abstract number.

A working vocabulary for case sizes

Most people describe luggage in airline terms, which is a good habit because it maps onto real dimensions. A cabin case is the wheeled bag that fits an overhead locker. A medium checked case is the common week-away size. A large checked case is the one that reaches the airline weight limit before it fills. A holdall or duffel is soft-sided and squashable, which makes it more useful than its size suggests.

Describing bags in those four categories is enough for an accurate answer. Adding anything that is not a suitcase completes the picture, since those items are where problems usually originate. Golf bags, instruments, pushchairs and display materials are the items that most often change the answer.

• Cabin case: overhead locker size, wheels, rigid or semi-rigid
• Medium checked case: standard week-away suitcase
• Large checked case: the biggest a passenger can realistically lift
• Soft holdall: compresses into gaps, more forgiving than it looks

Shapes that cause trouble

The awkward items recur across bookings: golf bags, ski bags, pushchairs, bicycle boxes, instrument cases, display stands, hat boxes and framed artwork. Each is long, rigid or oddly proportioned, and each can occupy the space of two or three suitcases because it cannot be stacked around.

The other trouble spot is quantity of small items. Six passengers each with a rucksack, a coat, a laptop bag and a carrier of duty free produces a surprising volume of loose objects that has to go somewhere, and it is rarely accounted for when people describe their luggage.

What each vehicle class realistically handles

Broadly, an executive saloon suits one or two passengers with a case each plus hand luggage. A luxury SUV takes a family's worth of cases and copes better with awkward shapes because the loadspace is taller and squarer. A people carrier is the answer for group luggage, especially where seat configuration can be adjusted to trade a seat for space.

Exact figures are not quoted because they vary by individual vehicle and configuration. What we do instead is confirm, for your specific booking, that the luggage you have described will travel comfortably rather than be wedged in. That answer is specific to your bags rather than a general statement about a class of vehicle.

Getting it right before the day

Send a list by count and size when you enquire, and include anything unusual. If you are unsure, err towards over-describing: it costs nothing to mention a bag that turns out to be small, and it costs a great deal to discover an extra case at a terminal with a marshal moving vehicles along.

Where luggage is genuinely uncertain, such as a shopping trip or a trade show with unknown materials, say that too. A vehicle with margin can be assigned rather than one sized exactly to a guess. It is far easier to assign a larger vehicle at the outset than to find one at the kerb.

Plan your chauffeur journey

London Chauffeurs provides itinerary-led private travel for airport transfers, executive travel, private aviation, events and long-distance UK journeys. Availability and pricing are confirmed for the requested itinerary.

Frequently asked questions