Ford's push for its EcoBoost plan-the one where turbocharged, little dislodging motors can as far as anyone knows supplant bigger, normally suctioned motors with enhanced mileage and no effect on force-swung to a push when it added a turbo four-barrel to the new Mustang's motor lineup. A turbo four in America's horse auto, dadgummit?! The analysis worked out alright in the Mustang car, in any event as indicated by our instrumented testing, however the 133-pounds-heavier Mustang convertible is the straw that crushes the EcoBoost's spirit.
Eco or Boost? It's a Trick Question
Each EcoBoost-controlled Ford that we've tried, Mustang or something else, has either conveyed conventional efficiency (the three-chamber Fiesta and Focus, for instance) or served up awesome force (like the twin-turbocharged 3.5-liter V-6 in the F-150)— yet never both at the same time. The EcoBoost introduced in the droptop Mustang conveys nor, being both the slowest 2015 Mustang we've tried while additionally not being especially proficient. The manual-and programmed prepared EcoBoost-controlled Mustang roadsters are faster than this present auto's 6.1 seconds to 60 mph by 0.6 and 0.9 second, and the 21 mpg we recorded amid the convertible's test is 1 mpg lower than we found in a 2015 Mustang V-6 with the programmed transmission. Gracious, and that V-6, which surrenders 10 pull and 40 lb-ft of torque to the EcoBoost, still yanks the Mustang to 60 mph in 5.5 seconds. Hell, a last-era Mustang V-6 convertible we leased beat this EcoBoost.
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| 2015 Ford Mustang EcoBoost Automatic Convertible |
The EcoBoost motor never feels like it's making 310 pull and 320 lb-ft of torque, and calls for full throttle are replied with moaning impassion, a disappointing absence of desperation above and beneath the 3000-rpm torque top, and turbo whoosh so uproarious you'll swear there's an air hose in the engine. Not every energetic auto needs to break the five-second hindrance to 60 mph or set down sub-12-second quarter-mile runs, however the Mustang driver will require the turbo's racket to veil his or her whining disgrace when Volkswagen GTIs and Honda Accord V-6s show their taillights in stoplight races.
Here, Hold Onto These Loaded Dice
Which takes us back to why, precisely, you'd pick this motor. You could renounce the EcoBoost for the V-6, however Ford fixes that vote: The less expensive V-6 Mustangs are confined to yet a modest bunch of choices—no route, no warmed and cooled seats, and none of the execution upgrading treats accessible on EcoBoost and V-8 models—basically slapping them with Avis and Hertz scanner tags from conception.
That has the impact of constraining numerous purchasers up to the EcoBoost, which begins at $35,700. With choices, our turbocharged convertible rang in at an as-tried cost of $43,365.
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| 2015 Ford Mustang EcoBoost Automatic Convertible |
This is especially disappointing in light of whatever is left of the convertible bundle's general brilliance. The electrically helped directing is precise and instructive in each of its three driver-selectable settings, and body control is generally also oversaw here as it is on other 2015 Mustangs. The main genuine bad habit is an inclination for the dashboard and rearview mirror to marginally quiver to the beat of whatever street blemishes happen to be going under the tires. Regardless of the auxiliary bandy, we wrung 0.91 g of hold from the Mustang around the skidpad, while the responsive brakes conveyed the auto to a prevent from 70 mph in only 152 feet. Some credit goes to the 19-inch Pirelli P Zero mid year tires, a piece of the $1995 Performance bundle that additionally incorporates a shorter 3.55:1 last commute, a constrained slip differential, and dark painted wheels. The $1195 six-pace programmed moves brilliantly, especially with the rigging lever in the S position, however it isn't speedy, making it significantly simpler to get the EcoBoost level footed or out of the help, which makes exploiting the adjusted suspension a test.
It would be a treat to match the Mustang's full dynamic potential with the slightest costly motor, especially since that motor is really great, however that doesn't fit Ford's showcasing plan. The House of EcoBoost has recognized the 2.3-liter motor's deficiencies to a degree and is taking a shot at a product fix to open more power that clients will be moved up to under guarantee in the nearing months. For the present, on the off chance that you need a topless Mustang with loads of stuff and a decent motor, you'll have to make good at least $42,700 to get into a V-8–powered GT droptop.
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