2015 Mustang 2.3L EcoBoost 4 Cylinder: Specs & Overview

2015 Mustang Streets of NYCDefined by the first 4 cylinder motor to be found the Mustang’s hood since the 1986 SVO and the overly impressive 305 horsepower it squeezes out of a mere 2.3 liter engine, the new 2015 EcoBoost Mustang is a game changer.

Some argue a 4 cylinder doesn’t belong in a Mustang and others call it natural progression, but regardless of which side of the fence you’re on, the 4 cylinder Mustang is here to stay. One thing there’s no arguing about is that it does have Mustang worthy power–the all-new 2.3L EcoBoost 4 cylinder is said to pump out a startling 305HP, 300LBS of torque and will likely weigh less than the 2015 GT and base model V6. That’s 5 more horsepower than the base model V6 will have, and with its turbocharged nature, there’s no denying that some will find ways to increase its power output well past factory rated levels.

Rear of 2015 Mustang at Good Morning AmericaThere’s also no denying that Ford is as committed to the 4 cylinder as the 6th generation Mustang will be sold in overseas markets. There’s also no guarantee they’ll be offering all three motors to our friends across the way–upon trying to confirm or rebut this, Ford’s Social Media Manager Scott Monty did not offer any information on which motors would be offered overseas, leading one to believe they would be excluding at least one offering from the lineup, most likely the V6. The European market is also supposed to receive a “stiffer suspension” setup than their US counterparts, according to Ford’s Chief Engineer Frank Davis. Davis also declared the V6 a US-only offering.

For those curious as to where outside the US the Mustang will be sold, see the map below:

Where The 2015 Mustang Will Be Sold

As for performance, the 4 cylinder shares many of its bells and whistles with the GT if not as a standard feature, as an optional performance package upgrade.

2015 Mustang – EcoBoost 4 Cylinder Specifications

Dimensions

Compare (in inches): 2015 Mustang – wheelbase 107.1, length 188.3, width 75.4, height 54.4, front track 62.3, rear track 64.9

2014 Mustang – wheelbase 107.1, length 188.5, width 73.9, height 55.8, front track 62.3, rear track 62.9

Differences (2015 vs 2014 Mustang): (-.2) in overall length, (+1.5) in overall width, (-1.4) in overall height, (+2) in rear track

Engine

Front Face of 2015 Mustang at Good Morning America- 2.3 Liter Ecoboost I4 – 140 cubic inch/2,300 cc

- At or greater than 305HP @ 5,500 rpm, 300 lb foot torque at 2,500-4,500 rpm

- 9.5:1 compression ratio

- aluminum block, aluminum cylinder head

- 3-port integrated into head exhaust manifold

- DOHC: 4 valves per cylinder w/ twin independent variable camshaft timing

- cast aluminum pistons

- forged steel connecting rods

- 87 octane fuel

- direct injection, 15.5 gallon fuel tank

- takes 6 quarts 5w-30

Drivetrain

-Standard 6 speed manual transmission (Hill Start Assist)

- Gear ratios: 1st: 4..236, 2nd: 2.538, 3rd: 1.665, 4th: 1.238, 5th: 1.00, 6th: 0.704

- Optional 6 speed automatic transmission (with paddle shifters)

- Gear Ratios: 1st: 4.17, 2nd: 2.34, 3rd: 1.52, 4th: 1.14, 5th: 0.87, 6th: 0.69

Suspension

- Front: double ball joint independent MacPherson strut & tubular sway bar

- Rear: integral-link independent rear suspension with coil springs, solid stabilizer bar & twin or mono tube dampers

Brakes

2015 Mustang AmericanMuscle- Front: 12.6inch x 33mm vented discs, twin-piston floating aluminum calipers

- Front: Optional Performance Package (standard on 2015 GT): 13.9inch x 12mm vented discs, four piston 46mm fixed aluminum calipers

- Rear: 12.6in x 12mm solid discs, single piston 45mm floating aluminum calipers, integral parking brake

- Rear: Optional Performance Package (standard on 2015 GT): 13inch x 25mm vented discs, single piston 45mm floating iron calipers; parking brake

Wheels + Tires

- Standard: 17 x 7.5 inch, 235/55R H A/S

Optional: 18×8 with 235/50R W A/S, 18×8.5 with 255/40R W A/S, 20×9 with 265/35R W, summer performance package: 19×9 with 255/40R Y

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  • Wayde Sutton

    So the 3.7L V6 is losing 5hp from 2014 to 2015?

    • Andrew Cilio

      Yep, they dialed it down a hair, likely because people might be confused as to which Mustang is the base model. The EcoBoost 4 is probably going to cost a couple grand more than the V6

      • Dan Heller

        I suspect the EB 2.3 will have considerably more than 305/300.

        • Andrew Cilio

          I hope so, I find the 305HP out of the 2.3L too close to the dialed down V6 to make it as appealing to a new buyer as it should be. Plus, it leaves a hell of a gap in performance when looking up at the 435+HP GT

  • http://www.stangbarn.com/ StangBarn.com

    I was always a fan of the SVO Mustang. Love that they’re bringing back a turbo 4 cylinder. Variety is the spice of life, right? – Josh @ http://www.stangbarn.com

  • AnneHappy

    Exhaust ports w/ matching twin-scroll turbo is awesome!

    Andrew, does 2.3L have completely new missions or share (w/ different ratio) manual & auto with V8? Will all models have 8.8 differentials? thanks ;)

    • Herman Campbell

      All will have the 8.8 not 100% sure on transmission gearing but believe its the same.

  • Jeff M

    The last production 4cyl Mushtang was in 1993.

  • Sid from Detroit

    Regression is not something Ford entertains. Upon reading this article, I understood the 2015 v6 model to boast 310 hp, whilst the EB model 305 hp. Given, however, the price difference in the base model and up, will fuel efficiency create the necessary marginal incentive?

    • Herman Campbell

      V6 will actually have 300hp and in the neighborhood of 30 less ft-lbs vs the Ecoboost. V6 is just for base models ecoboost will be the better performer and much better MPG.