The best car for a banger rally is rarely the tidy little number you keep under a cover and polish every Sunday. It is the slightly questionable estate your mate found three towns away, the elderly saloon with an inexplicably comfortable driver’s seat, or the hatchback that has already survived three owners, two dogs and a suspiciously enthusiastic trip to the tip. You are not choosing a concours winner. You are choosing a teammate.

It needs to carry people, daft costumes, spare socks, snacks and whatever charity-challenge props seemed like a brilliant idea in the pub. It needs to tackle proper European roads, sit happily on a motorway, park in a tiny hotel car park and, ideally, still make the finish-line photos without requiring a lorry ride. Character matters. But so does getting there.

What makes the best car for a banger rally?

Start with a simple principle: buy the most honest car you can afford to run, repair and potentially laugh about later. Cheap does not have to mean neglected. In fact, the bargain that becomes a four-figure rescue mission before you have even left the driveway is not a bargain. It is a very expensive source of anecdotes.

Reliability should be your first filter, even if the car looks gloriously shabby. A rally is more fun when the roadside repairs are a bit of theatre rather than your full-time occupation. Look for a model with a decent reputation, plenty of cars still on the road and readily available parts. A car that any ordinary garage can understand is usually a better bet than an obscure masterpiece with parts made from moon dust.

Space comes next. Two people can tour Europe in almost anything, but there is a difference between squeezing into a tiny coupe for five days and having room for a cool box, coats, tools and a bag that is not permanently lodged against your shoulder. Estates, sensible saloons and five-door hatchbacks earn their place here. They may not look heroic on a forecourt. On day four, when everyone has acquired wet trainers and half a dozen regional snacks, they look very heroic indeed.

Fuel costs deserve a sober look too. That glorious old V8 may sound magnificent in the hotel car park, but it will drink through your fundraising budget with the focus of a thirsty camel. A modest petrol engine, a dependable diesel where appropriate, or an older hybrid with a proven history can make more sense. The right answer depends on your route, your budget and whether the noise is central to your team’s deeply questionable identity.

Then there is the crucial, unscientific test: does it make you grin? A banger rally car should have a story before it has left Britain. Perhaps it is painted the colour of custard. Perhaps the rear electric window only works when the radio is off. Perhaps it is the exact model your dad had in 1998. If it gives your team a theme, a nickname or a reason for strangers at petrol stations to start a conversation, it is doing useful work.

Best car contenders for the long haul

There is no single winner because the best car depends on your team, your mechanical confidence and your appetite for chaos. Still, a few types of car repeatedly make sense for a multi-day continental misadventure.

The unfashionable estate

An old Volvo, Skoda, Saab, Mondeo or similar long-roof workhorse is rally gold when you can find a sound one. Estates swallow kit without complaint, generally offer sensible long-distance comfort and have enough visual presence for stickers, flags and a team name that absolutely should not have been approved by adults.

The trade-off is size. Some old estates are broad, long and less amusing in tight Italian streets or packed city-centre car parks. Check that the boot floor is solid, the rear suspension is not exhausted and the cooling system can cope with a hot motorway day. A giant boot does not help if the car is leaving a trail of coolant across the Alps.

The sensible hatchback

A Ford Focus, Honda Civic, Toyota Corolla, Skoda Fabia or Volkswagen Golf can be a cracking choice. These cars are easy to drive, comparatively easy to park and often have a wide supply of parts. They are also less likely to make a first-time rally team feel as though they are piloting a narrowboat through a French village.

The downside is that a small hatch gets cramped quickly. Pack like grown-ups, not like you are moving house. Soft bags beat rigid suitcases, and every item should earn its place. You do not need three emergency umbrellas. You do need a warning triangle, sensible paperwork and a way of finding the wheel brace when it is raining sideways.

The old executive barge

There is a special kind of joy in taking a tired-but-loved Mercedes, BMW, Jaguar, Lexus or Rover across Europe with a boot full of optimism. These cars can be wonderfully comfortable, look tremendous in team livery and make a grand entrance at evening stops. They are built for eating miles, which is rather useful when your road book points you towards the good stuff.

Be realistic, though. Premium does not mean cheap to repair. An inexpensive executive car can conceal expensive suspension, electrical or cooling issues. Buy on condition rather than badge, and do not assume a thick service folder is proof that everything works now. Turn every button, test every window, listen for every suspicious clunk and take it for a proper drive.

The oddball with a fan club

A quirky Citroen, a classic Fiat, an elderly 4×4 or something that causes people to say, “I haven’t seen one of those in years,” can turn a rally car into a rolling conversation. If the model has an active enthusiast community and parts are available, odd can be brilliant. The best teams often remember the peculiar car as much as the route.

Just avoid confusing rarity with charm. If a replacement sensor can only be found by ringing a man called Keith in Lincolnshire, perhaps keep looking. You want character that travels, not character that requires an archaeological dig every time a warning light appears.

Buy with your eyes open, not just your heart

Before money changes hands, inspect the boring bits. Rust underneath is far more serious than faded paint or a sagging headlining. Check the sills, suspension mounting points, floorpan, brake lines and areas around the wheel arches. A cheap cosmetic tat-up can hide a very unhappy structure.

Take the car for a long enough test drive to get it warm. Watch the temperature gauge, test the brakes firmly in a safe place, listen for wheel-bearing rumble and make sure the clutch, gearbox and steering do not offer any nasty surprises. Check for fluid leaks once you stop. If you are not confident doing this, bring someone who is. Paying for an inspection is less glamorous than buying novelty horns, but considerably wiser.

Paperwork matters as well. Make sure the car is properly insured for the countries you will visit, carries the required documents and meets any event requirements. Rules, equipment and emissions restrictions can vary by route and destination, so read the rally handbook rather than relying on something a bloke said in a Facebook comment three years ago.

Spend a little before you set off

The smartest rally teams do not simply buy a car and point it at the ferry. Give it a basic pre-rally service: fluids, filters, tyres, brakes, wipers and lights are the sensible foundations. Replace anything borderline before departure, especially tyres and batteries. A battery that is “mostly fine” has an extraordinary habit of becoming entirely not fine outside a mountain hotel at 6.30am.

Carry a modest kit that matches your ability. Useful items include a tyre inflator, jump leads, basic hand tools, tape, cable ties, gloves, spare bulbs where suitable and a few essential fluids. Do not pack enough equipment to rebuild the engine in a lay-by unless somebody in your team genuinely knows how to rebuild an engine in a lay-by.

Decorate only after the mechanical basics are sorted. Then go wild, within reason. Your trusty rusty wreck deserves its stickers, its ridiculous name and perhaps a mascot with no practical purpose whatsoever. The car becomes part of the fundraising story, and people are more likely to donate when they can see you have committed to taking something gloriously unlikely across a continent.

The car is only half the adventure

A perfect car can still produce a dull trip if you spend every day chasing the fastest route and eating service-station sandwiches in silence. A slightly scruffy but dependable machine, packed with good people and pointed towards spectacular roads, can become the stuff you talk about for years.

That is why organised rallies such as Rusty Rex Rally make sense for teams who want the freedom of the road without starting with a wrong turn. You bring the car, the team spirit and the questionable fancy dress. The route, the daily momentum and the evening stories take care of the rest.

Choose the car that is safe, serviceable and full of enough personality to earn a nickname. Then give it a once-over, load it sensibly and let it collect the dents, photographs and heroic stories it was clearly born to have.