See inside the stunning $135,000 electric Mercedes that's taking on Tesla's Model X

• I drove Mercedes-Benz's EQS SUV, the luxury brand's first electric SUV for US customers.

• Its leather-filled interior and smooth, supple ride make it the ultimate comfort machine.

• The EQS 450 4Matic SUV that Mercedes lent me cost $135,000 and included tons of fancy options. 

Up until fairly recently, if you wanted a big, luxurious SUV that ran on electricity, your main choice was a Tesla Model X.

But now, players like BMW and Mercedes are on a mission to steal Elon Musk's thunder — and customers.

Mercedes-Benz's first battery-powered SUV for US customers is the EQS SUV, which I got to test out recently.

It's packed with impressive features and offers solid driving range, but its super comfortable and luxurious interior blew me away the most.

Here's everything the EQS SUV has to offer.

The EQS SUV starts at $104,400 for a single-motor base version.

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I drove the EQS 450 4Matic SUV, which serves up all-wheel drive from and costs $107,400 to start. The one Mercedes lent me came out to $135,000, including options like upgraded rear seats and a $7,300 "Hyperscreen" up front.

My tester promised a respectable 285 miles of range, but you can get an EQS SUV with a rating of up to 305 miles.

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The model's rounded features and plump proportions have proved polarizing.

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But you can't argue with its tremendous interior.

Shut yourself inside the EQS SUV with a satisfying thunk of its hefty door and you're left insulated from the noisy, chaotic outside world.

Its plush, supportive front seats keep you comfy and come standard with heating and cooling functions.

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Look around and you'll find a dazzling array of rich materials and elegant metallic bits.

Colorful ambient lighting winds its way throughout the cabin, adding to the upscale-feeling atmosphere.

And everything from the steering wheel to the seat controls to the turn-signal stalk feels hefty and well-built.

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The EQS SUV blends old-school comfort with modern tech, particularly when you choose the optional Hyperscreen that was fitted to my vehicle.

It's three separate screens under a single sheet of glass that stretches the entire width of the SUV.

It's sure to make all the tech lovers out there salivate, but that football field-sized piece of glass tends to bounce sunlight right into the driver's eyes.