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TL;DR

Mustang (S550) EcoBoostSmart Money, Pragmatists
Biggest reasons are MSRP (+33%), Configuration (Inline 4), and Aspiration (turbocharged).
Mustang (S550) GTDrivers, Minimalists
Biggest reasons are Displacement (+123%), Power (+48%), and Power-to-Weight (+40%).
Spec Ford Mustang (S550) EcoBoost Ford Mustang (S550) GT Difference
Model Years 2015–2023 2015–2023
Release Date 2014-09-08 2014-09-08
Body Style coupe / convertible coupe / convertible
Configuration Inline 4 V8
Displacement 2.3L (138 ci) 5.0L (307 ci) +122.5%
Engine Code 2.3 EcoBoost Gen-3 Coyote
Crank cross-plane cross-plane
Aspiration turbocharged naturally aspirated
Fuel gasoline gasoline
Redline 6,500 rpm 7,500 rpm +15.4%
Power 310 hp @ 5,500 rpm 460 hp @ 7,000 rpm +48.4%
Torque 350 ft·lbs @ 3,000 rpm 420 ft·lbs @ 4,600 rpm +19.8%
Compression 9.5:1 12.0:1 +26.3%
Bore × Stroke 87.5 × 94.0 mm 93.0 × 92.7 mm
Powertrain ICE ICE
Drivetrain RWD RWD
Transmission manual 6-speed manual 6-speed
Curb Weight 3,583 lbs 3,785 lbs +5.7%
Power-to-Weight 191 hp/ton 268 hp/ton +40.4%
0–100 km/h 5.5s 4.3s -21.8%
Top Speed 155 mph 155 mph
MSRP $27,205 $36,120 +32.8%
Fuel Economy 22 / 32 / 25 mpg 22 / 32 / 25 mpg