The short answer: a 4x4 is almost never necessary
Réunion is small (around 2,500 km²) but vertical: you go from sea level to over 2,000 m in an hour's drive. That verticality looks daunting on a map, but it does not translate into dirt tracks. The sealed network covers the national roads, the departmental roads and the main tourist forest roads.
- A city car will circle the island and climb to Maïdo, Cilaos, Salazie and the Plaine des Cafres without particular difficulty.
- Four-wheel drive adds nothing on these roads: what matters in the mountains is the engine, the brakes and the gearbox.
- The genuine 4x4 terrain (the Rivière des Galets track towards Mafate, forest tracks in the highlands) is either forbidden by your hire contract or reserved for authorised vehicles.
Paying a daily supplement for a 4x4 "just in case" is therefore rarely worth it. If a raised body still reassures you, first compare the prices of the available SUVs against a compact: the gap usually speaks for itself.
Trap no. 1: what your hire contract actually says
This is the point nobody explains, and it can cost a great deal. Most hire contracts in Réunion forbid driving anywhere other than on sealed roads. Wording varies between agencies, but you regularly find a clause along the lines of: vehicle prohibited "on unmade roads, tracks, paths, beaches, ravines or restricted routes".
And where the clause is not enough, the insurance exclusions finish the job. Very often excluded from any cover, whatever option you took:
- damage to the underside of the vehicle (sills, sump, mechanical parts beneath the car);
- tyres, wheels and hubcaps;
- damage arising from off-road driving.
In plain terms: a stone punching through a sump on a track comes out of your pocket — including with a "fully comprehensive" formula and an excess waiver. And hiring a 4x4 changes nothing about that clause: the prohibition is about the type of road, not the type of vehicle. The right reflex: read the "use of the vehicle" article in your terms and, if in doubt about a specific route, get written confirmation before setting off.
Maïdo: a city car is enough, the rest is about the weather
The Maïdo viewpoint, at around 2,190 m, offers the finest view over the cirque of Mafate — and it is reachable in a city car. From Saint-Paul, the Maïdo forest road (RF8) is sealed all the way to the viewpoint car park, about an hour's climb from the coast.
What is demanding is not the surface, it is the conditions:
- A continuous climb in hairpins. A small engine copes, but you must accept driving in second and third for a long time.
- The mist, which often rises mid-morning and can erase the view entirely. Set off early: sunrise at Maïdo is worth the alarm clock.
- The cold at altitude. It can be under 10°C up there at daybreak while it is close to 30°C on the coast. Bring a fleece and something to wipe a misted windscreen.
- The car park, free but quickly full at weekends and during holidays.
The only real benefit of an SUV here: the driving position and comfort. Not traction.
The Volcano and the Plaine des Sables: the one genuine exception
This is the only major tourist route on the island that is not entirely sealed. From Bourg-Murat, on the Plaine des Cafres, the Volcano forest road climbs in hairpins for some fifteen kilometres up to the Pas des Sables. Up to there it is tarmac: narrow, winding, sometimes worn, but tarmac.
After that, the road drops onto the Plaine des Sables: several kilometres of gravel track crossing that lunar plateau to the Pas de Bellecombe car park, the trailhead for walks into the enclosure of the Piton de la Fournaise. This section is regraded and patched regularly by the forestry service after heavy rain: its condition varies from one month to the next, from "smooth" to "potholes across the full width".
Three things to know:
- Technically it is not a 4x4 road. City cars and saloons drive it every day, slowly. Decent ground clearance genuinely helps; four-wheel drive does not.
- But it is very much a track as far as your contract is concerned. If your terms forbid unsealed roads, you are driving there with no cover on the underside or the tyres. That is the real issue, far more than the mechanics.
- Access can be closed. During an eruption or heightened alert, access to the enclosure and the Pas de Bellecombe is regulated by prefectoral order. Check the official information the same morning.
The wisest option if your contract is restrictive: park at the Pas des Sables, where the tarmac ends. The panorama over the Plaine des Sables from that viewpoint is already spectacular, and you can continue on foot or with a local operator. Fill up before you climb: there is no petrol station in the highlands.
Cilaos, Salazie, Mafate: it is the engine that counts, not the transmission
The road to Cilaos (RN5) is the island's most famous: people commonly speak of its 400 bends, with narrow tunnels cut into the rock where you take turns to pass, and stretches along the cliff face. It is entirely sealed and perfectly drivable in a city car, but it demands concentration and about 1 hr 30 from the coast. Sound your horn before blind bends and tunnels — that is the local custom. If you are staying overnight, look at the vehicles available in Cilaos.
Salazie (RD48), towards Hell-Bourg and the Voile de la Mariée, is the most easily reached cirque: a good warm-up if hairpins are not your daily routine.
As for Mafate, let us settle it: there is no road. The cirque is reached on foot or by helicopter. The Rivière des Galets 4x4 track is seasonal, often destroyed by rain and rebuilt, and reserved for authorised vehicles: it is not an option in a hire car.
On these mountain roads, the essentials come down to three points:
- An engine that does not struggle. The most modest units make it up, but with nothing in reserve for overtaking.
- Brakes treated kindly. Going down, use engine braking rather than riding the pedal.
- A sensible width. A large SUV becomes a handicap in the tunnels and passing places of Cilaos.
Everyday driving: the coast, traffic and parking
On the coast, driving resembles mainland France: same rules, same limits (50 km/h in built-up areas, 80 km/h outside, 110 km/h on expressways) and no tolls. Many travellers collect their vehicle on arrival at Roland Garros Airport and head straight for the west. Two local particularities:
- The coast road (RN1), between Saint-Denis and La Possession, is the island's busiest axis and remains prone to rockfall: it can be switched to contraflow or closed in heavy rain. It is gradually being replaced by the new coast road, opening in stages — check local traffic information on the day.
- Traffic jams at peak times around Saint-Denis and Saint-Pierre are very real. Allow plenty of time before a flight or an appointment.
As for parking: car parks at tourist sites and viewpoints are generally free but fill early; in town centres parking is paid and often time-limited. A compact size helps, and it is best to leave nothing visible inside the car in isolated car parks.
Automatic gearbox, air conditioning, boot: the options that really change things
Three trade-offs matter more than the "4x4 or not" question:
- The automatic gearbox. The Réunionnais fleet is still mostly manual, but if you normally drive an automatic, or if hill starts and endless hairpins tense you up, it is the best euro you will spend on your hire. Book early: automatics go fast.
- Air conditioning. Fitted to almost every vehicle, it is essential: it is hot and humid on the coast, particularly from November to April. It also demists the windscreen in the highlands, which becomes a genuine safety matter on the roads to Maïdo or the Volcano.
- Boot space. Two suitcases, hiking bags and beach kit: a small city car fills up fast with four people. Measure that before picking the cheapest category.
So which car should you hire for your trip?
To decide quickly:
- Couple or solo traveller, classic tour of the island (west-coast beaches, Cilaos, Salazie, Maïdo, the wild South): a city car or a compact is ample. It is also the most frugal at the pump and the easiest to park.
- Family of four or five with luggage, a long stay, accommodation in the highlands: a roomy compact or an SUV, for the boot and comfort on long climbs.
- Set on crossing the Plaine des Sables at the wheel: a vehicle with decent ground clearance, and above all a contract that allows it. Ask explicitly before booking.
- Coast and beaches only: the smallest category does the job perfectly.
The best advice is the simplest: do not oversize. In Réunion, the ideal car is the one that climbs without straining, parks anywhere and leaves you budget for the rest of the trip. Compare the vehicles available on your dates from vetted local agencies.
