Used 2021 BMW M550i Base for sale 

The 2021 BMW M550i xDrive is trim in itself, available at an MSRP of $76,800, as an M-Sport model it comes with a 4.4L twin-turbocharged V8 making 523 hp and does the 0-60 sprint in 3.6 seconds. Along with this, there are the M Division's brakes, suspension tuning, and steering tuning to complement the engine upgrade. 

The BMW M550i xDrive comes with many packages like the premium package, executive package, dynamic handling package. Along with this, there are standalone options like seat ventilation, Bowers & Wilkins surround sound system, and accessories like BMW M performance steering wheel and M performance rear spoiler.

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The 2021 BMW M550i xDrive comes priced at $76,800 which comes with a 4.4L twin-turbocharged V8 making 523hp with AWD system. On the inside, you get Dakota leather and a 12.3-inch touchscreen with iDrive 7.0, we say it is already well equipped. But we recommend adding the premium package ($1,250) which adds head,s up display, gesture control, and a few more, the optional Nappa leather upholstery ($1,000), and the BMW M Performance rear spoiler, to make it look good.

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"Acceleration is dramatic, with 0 to 60 whizzing by in a mere 3.6 seconds, which is fast enough to make one question why you'd need an M5" - CarBuzz

The 2021 BMW M550i will also be powered by the same 4.4L BMW M Performance TwinPower Turbo V8 producing 523 HP and 553 lb-ft of torque as the 2020 model. The engine will be paired with an 8-speed Sport Automatic transmission with steering-wheel-mounted paddle shifters sending power to BMW’s xDrive AWD system.

The 2021 BMW M550i xDrive does the 0-60 sprint in 3.6 seconds which is 0.8 seconds faster than the Mercedes-AMG E 53 and the Audi S6, both setting a time of 4.4 seconds. The 2021 M550i does the standing quarter mile in 11.8 seconds and comes with an electronically limited top speed of 130 mph.

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The 2021 BMW M550i xDrive comes with fuel economy numbers of 17 mpg in the city, 25 mpg on the highway, and a combined 20 mpg. This is less by a combined 5 mpg when compared to the Mercedes AMG E 53 and 2 mpg less when compared to the Audi S6.

The BMW M550i xDrive comes with an 18-gallon fuel capacity which is smaller than the fuel capacity of the Mercedes-AMG E53 and the Audi S6, which come with a 21.1 gallon and 19.3-gallon fuel tank, respectively. Due to the larger fuel tank capacity and better mpg numbers, the range is also better.

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"the M550i xDrive does a convincing Rolls-Royce impression" - Car And Driver

The 2021 BMW M550i has an interior styling typical of a BMW with a lot of added comfort features. It comes with a seating capacity of 5-occupants with the front row comes with 16-way power-adjustable multi-contour seats with 4-way power lumbar with the heating function. The seats feature Dakota leather upholstery as standard with the rest of the cabin getting SansaTec (leatherette), it is worth every penny of the $76,800 you spend on it.

The 2021 M550i xDrive comes with the option of Nappa leather upholstery ($1,000), front-seat ventilation, front seat massage, rear-seat heating, heated steering wheel, and the BMW M Performance steering wheel. Additionally, the 2021 BMW M550i xDrive comes with a cargo capacity of 14 cu.ft. which is 0.3 cu.ft. more than the Audi S6 and 0.9 cu.ft. more than the Mercedes-AMG E 53.

 The 2021 BMW M550i comes with a 12.3-inch central information display (touchscreen) which runs on the iDrive 7.0 interface. It also has the features of navigation, Bluetooth connectivity, Android Auto and Apple CarPlay connectivity, SiriusXM radio with 1 year subscription 16-speaker Harmon/Kardon surround sound system.

There are a few optional extras in the area of infotainment on the 2021 M550i and comes in the form of a Premium package ($1,250) which gives gesture controls, heads-up display, wireless charging, and enhanced USB and Bluetooth. There is also the stand-alone option of Bowers and Wilkins 16-speaker Diamond Surround Sound system ($3,400).

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"Set a mere rung below the M5, the M550i wears a body kit that makes it look nearly as aggressive as the M5" - Car And Driver

The 2021 BMW M550i has a minor facelift in its design which includes a new headlight design where the design is sleeker than before, the headlights got a new L-shaped DRL lighting element. Moreover, the infamous kidney grille is also getting a makeover by getting taller and broader, along with a new bumper design and new taillight design.

The exterior is completed with a set of 18-inch wheels, which can be upgraded to 20-inch wheels ($1,100) with performance tires. Exterior options include extended Shadowline trim ($500) adding black color to the exterior accents, choice of colors, and BMW M performance spoiler - Cabon fiber ($827)

In terms of dimensions, the 2021 BMW M550i is the same as the 2020 model, and there is less than an inch in difference in dimension with the Mercedes-AMG E53 and the Audi S6. 

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The 2021 BWM M550i has not been crash-tested by the NHTSA or IIHS. However, the IIHS has crash-tested the regular 5-series sedan, which the M550i shares a structure with, and the 5-series has scored an overall "Good" safety rating. 

Nonetheless, the 2021 BMW M550i xDrive comes with a host of standard safety features and driver-aids at your disposal which includes Forward collision warning with collision mitigation, lane departure warning, lane keep assist, and a few more. There is also the driving assistance plus package (optional - $1,700) which adds active driving assistant pro and traffic jam assistant.

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2021 BMW M550i Vs. 2021 Mercedes-Benz AMG E 53

The Mercedes-Benz AMG E 53 comes with lesser power and performance, less cargo space but offers some of the fanciest interiors in the automotive industry. However, with the performance and more space for the same price as the AMG, we will pick the BMW M550i xDrive. 

2021 BMW M550i Vs. 2021 Audi S6

Like the Merc, the Audi S6 offers lesser power, performance, and cargo space, with the same amount of interior space. However, the Audi offers the Quattro system making its driving experience unique. However, with the performance and more space for the same price as the Audi, we will go with the BMW.

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For $76,800, one will hardly find any car that matches the performance capabilities and the luxury quotient of the BMW M550i. Although there are similar cars with similar performance capabilities, they tend to cost way more than the M550i. Considering all these, the BMW M550i seems to be a bargain.