Rent Mercedes GLS 450 2021 in Dubai

Seven adults, a week of suitcases and a DXB run at the end of it: that's the brief the Mercedes GLS 450 2021 is built for, and we rent it in Dubai with the no-deposit option, so you can put a full-size luxury seven-seater on your doorstep without locking up a chunk of cash. This is the family flagship of the three-row SUV class, a genuine limousine for the whole group rather than a five-seater with two folding jump seats bolted in the back. The decision this page settles is simple: when does a car this large and this thirsty actually earn its keep, and when should you take less.

What the GLS 450 actually is

It's the biggest SUV Mercedes makes short of the Maybach, and the size is the whole point. Three real rows, a 3.0-litre inline-six with a 48-volt EQ Boost mild-hybrid setup, 367 horsepower, and 4MATIC all-wheel drive feeding a nine-speed automatic. On paper it does 0 to 100 in 6.2 seconds and tops out at 246 km/h, which for a 2.4-tonne SUV means it never feels like it's working hard. On Sheikh Zayed Road it sits at the speed limit with the cabin hushed and overtakes a slow lorry without you planning the move three cars in advance.

The mild-hybrid system mostly matters for smoothness. The engine restarts cleanly at lights and the AC keeps running while it does, which in a Dubai summer is the part you actually feel.

Specifications

Does the whole family and the luggage fit

Yes, and that's the GLS 450's main argument. The second row is limousine-class for two adults or three across, and the third row is the rare one that fits grown-ups for a real trip, not just kids on a short hop to the mall. Headroom and legroom back there hold up for an hour-plus run, which is exactly what you want for a DXB or DWC airport collection with relatives in tow.

The catch is luggage. With all seven seats up you've got 355 litres behind the third row, enough for soft bags and a couple of cabin cases but not a full set of hard suitcases for seven. The honest play for a big airport run is six passengers, third row up on one side, the other side folded for cases. Drop both back seats and you have 2400 litres, more boot than most people will ever fill. So: seven in comfort, or seven with full luggage, but rarely both at once.

The fuel bill and how often you'll stop

This is where you size up the cost of all that space. Official combined economy is 9 to 9.4 L/100km, and in real Dubai driving, with the AC fighting 45-degree heat and stop-start traffic through Downtown and the Marina, expect to land higher, comfortably into the low-to-mid teens around town. The 90-litre tank is the saving grace. Even at a heavy 14 L/100km you're getting well over 600 km between fills, so a week of school runs and dinners rarely means more than one or two trips to the pump. On a single long highway leg to Abu Dhabi and back it'll sip closer to its rated figure.

If the fuel number makes you wince, that's a signal worth listening to. You're paying for seven-seat luxury whether the third row is occupied or empty.

Heat, parking and the Dubai realities

Cooling a cabin this large after it's baked in a car park is the real test, and the GLS handles it better than most. There are vents for all three rows, rear climate controls, and the EQ Boost system keeps the compressor working through the auto stop-start, so the air doesn't go warm at every red light. From a 45-degree soak it still takes a few minutes to pull the whole cabin down, simply because there's so much air to move, but the back rows aren't an afterthought the way they are in smaller SUVs.

Size is the trade-off you live with daily. At over 5.2 metres long and just under two metres wide, this thing is a handful in a tight Marina multi-storey, and some older bays and ramps will have you folding the mirrors and using the 360 camera in earnest. The air suspension is the quiet hero here: it soaks up speed bumps and mall ramps that would scrape a lower car, and you can raise it for a steeper driveway. U-turns need a wide arc, so plan them.

A few rules that pass straight to you as the renter: Salik tolls are billed to the car and become your cost, any RTA fines during the rental are yours, seat belts are required in every one of those seven seats, and children under four need a proper child seat. None of it is unusual, but with a full car it's worth saying once.

Who should rent it, and who shouldn't

Rent the GLS 450 if you're moving a real group: an extended family arriving at DXB, a week of trips where six or seven people travel together, or anyone who wants their back-seat passengers to ride as well as the driver. Nothing in its class does the third row this comfortably.

Don't rent it to carry two or three people around the city. If you're rarely using the third row, the GLE gives you almost the same front-cabin luxury, an easier park, and a lighter fuel bill for less money, and it's the smarter pick for a couple or a small family. And if you genuinely need seven seats but not the badge or the running cost, a more modest seven-seater will do the airport run for a fraction of the fuel. The GLS earns its rate when the whole family is aboard and comfort across all three rows is the actual job. Empty out the back two rows and you're paying for limousine space you're not using.