Get all of your S550 Mustang specs & info all in one place with LMR's guide to 2015-2023 Mustangs!
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The exterior of the new S550 Mustang underwent some significant changes. The new pony car got wider more aggressive rear shoulders that meet up with a rear-end that features a modern take on the classic tri-bar style tail lights. The S550 Mustang features large upper and lower grille openings for maximum cooling capabilities. The interior completely changed in 2015-17, Ford used real-world materials to build the bulk of the interior – aluminum, leather, and stitching. Ford also debuted a whole new engine to its lineup, while keeping to the heritage of the 5.0L V8 and 3.7L V6, the 4-cylinder 2.3L turbo made a comeback. Ford ditched the live axle and joined the modern world with an aluminum IRS for improved handling and strength!
Ford released an all-new engine in 2015! The 2.3L 4cyl Turbo made its debut and had the power to back it up! Making an impressive 305 horsepower and 300 ft-lbs of torque. Ford kept with the trend from 2011-14 and added the 3.7L V6, making 305 horsepower at 6,500 rpm and 280 ft. lbs torque at 4,250 rpm. The 5.0L Coyote received an upgrade of its own making 435HP and 400 lb-ft of torque, which is 15 hp and 10 lb-ft more than it made in the outgoing Mustang. Ford also released the much anticipated 5.2L V8 code-named the Voodoo engine found in the all-new Shelby GT350! This beastly 5.2L V8 made and impressive 526 hp and 429 lb-ft with a flat-plane crank often found in European sports cars!
Ford hasn't really carried over the special editions trend from the previous years, in the 2015-16 Model. However, they did offer the popular GT/CS, GT350, GT350R, and 50th anniversary. The 50th anniversary featured emblems and interior pieces to help commemorate the 50th anniversary of the Ford Mustang. When Ford released the new GT/CS some of the changes were immediately noticeable. With a new front grille, wheels, and turn signal equipped hood vents the 15 GT/CS had an aggressive sought after look. The GT350 and GT350R received major upgrades in the exterior, engine, and interior department making this Shelby a race-inspired dream!
2018 brought the biggest change to the S550 model Mustang! Most notably are the newly redesigned front fascia! With the 2018 model, it featured a new hood, fenders, bumper cover, grille, and the very popular headlights! These headlights are seemingly shorter and more square compared to the sleek, stealthy look of the 15-17 headlights. Some of the rear enhancements included taillights to match the style of the headlights, a larger spoiler on Performance Pack models, a style line across the center of the decklid, and a more aggressive rear valance!
In 2018, Ford came out with the gen 3 Coyote engine! This engine brought with it an increase of 435 to 460 HP and 400 to 420 lb-ft of torque! This new 5.0 features dual-fuel, high-pressure direct injection with low-pressure port fuel injection. This combo allowed the Gen 3 coyote to produce more power while becoming more efficient. Some other notable engines are the 2.3L Ecoboost & Ecoboost High Performance Pack and the 5.2L Voodoo engine for both the GT350 & GT500. Below we will delve further into these.
The most current Bullitt model came out in 2019 and is basically an appearance and performance package for the 2019 Mustang GT. Many consider this the best-looking Bullitt edition yet and only comes with the Dark Highland Green or black options for the exterior color.
GT350 and GT350R continued to come out with small improvements in 2018, it wasn't until 2019 until we really saw a huge change leading up to the ever-popular GT500! The biggest upgrades we saw were an optimized grille closeout upfront and a redesigned rear spoiler. Also, it came equipped with the Pilot Sport Cup 2 tires to improve overall performance.
Leading up to the grande finale, the 2020 GT500! This supercharged powerhouse packs 760 HP at 7,300 RPM and 625 lb-ft of torque at 5,000 RPM with 93 octane fuel. This allows the 2020 GT500 to be crowned the most powerful street-legal Mustang Ford has ever produced.