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Mercedes EQS Faces Moose Test, Physics Wants To Have a Word

Mercedes's EQS is a technological tour de force, and it is regarded as "the S-Class of electric cars." While we have yet to drive it, we have heard good things about it from fellow journalists. With that in mind, one wonders how well it behaves in the famous moose test.
Mercedes-Benz EQS moose test 6 photos
Mercedes-Benz EQS moose testMercedes-Benz EQS moose testMercedes-Benz EQS moose testMercedes-Benz EQS moose testMercedes-Benz EQS moose test
The test was carried out by the Spaniards at km77.com, and the example they were offered to test was a 580 4Matic version of an EQS. The Mercedes-Benz EQS 580 4Matic is a dual-motor, all-wheel-drive version of the electric sedan from the German marque.

It offers a total power of 523 horsepower and a peak torque of 855 Nm (603.5 lb.-ft.), and these resources are enough to take the luxury sedan from naught to 62 mph (100 kph) in just 4.3 seconds. Top speed sits at 130 mph (209 kph), which is more than enough for any public road, including Germany's famous Autobahn that has unrestricted bits.

The tested example was fitted with Goodyear Eagle F1 Asymmetric 5 MO 265/40 R 21 105 H tires on its 21-inch wheels. Moreover, the vehicle was also equipped with a rear-axle steering system, which can turn the rear wheels ten degrees to the left or the right, depending on what its computers deemed necessary for more agility.

The highest speed that resulted in a pass was 72 kph (44.74 mph), which is a "poor result," as km77.com described it. The first attempt was made at 77 kph (47.8 mph), and two cones were hit.

As a reference, the best result obtained by the previous generation of the S-Class was an entry speed of 74 kph (45.9 mph). As the Spaniards noted, the S-Class is lighter than the EQS, which helped, but not enough to pass with 77 kph (47.8 mph).

Now, two other key factors need to be considered here. Just like many other electric vehicles, the EQS is not lighter than its conventionally powered counterparts.

Instead, it has an unladen weight of 2,585 kilograms (5,699 lbs.). That is a lot for a sedan, but is linked to its 107.8-kWh battery that provides an estimated range of 420 miles (675.9 kilometers).

The second factor that needs to be accounted for is vehicle size, which is why many SUVs struggle in the moose test. The Mercedes-Benz EQS is 75.8 inches (1,925 mm) wide and 205.4 inches (5,217 mm) long.

The wheelbase is 126.4 inches (3,211 mm) long, which means that a smart fortwo (105.9 inches or 2,690 mm) long can fit between the axles and have room to spare.

While vehicle dynamics play an important role in this test, it is essential to understand that the moose test is conducted under a set of rules, which are represented by the ISO 3888-2 norm.

The test route is composed of three sets of “gates”, A, B, and C, which are made of three pairs of cones each.

The first gate that the vehicle passes through, A, is the width of the vehicle times 1,1 + 0,25 meters (9.84 inches). The second gate, B, which is the one in the middle, is the width of the vehicle plus one meter (39 inches) wide, while the last gate, C, has a width set at 3,0 meters (118 inches) regardless of vehicle size. The distance between the gates is always the same.

As you can imagine, vehicle dynamics, weight, suspension settings, tires, and ESC operation play a key role in this equation. However, the test is especially hard on longer and wider vehicles, and it gets even trickier if they tip the scales more than some of their counterparts do.



 
 
 
 
 

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