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Ford made three big mistakes in calculating MPG for 2013 C-Max Hybrid

It's been a rough time for the official fuel economy figures for the Ford C-Max Hybrid. When the car was released in 2012, Ford made a huge deal about how it would beat the Toyota Prius V, which was rated at 42 combined miles per gallon, 44 city and 40 highway. The Ford? 47 mpg across the board. How did Ford come to this place, where its Prius-beater turned into an also-ran? Well, after hearing customer complaints and issuing a software update in mid-2013, then discovering a real problem with the numbers last fall and then making a big announcement last week that the fuel economy ratings of six different 2013 and 2014 model year vehicles would need to be lowered, the C-Max Hybrid has ended up at 40 combined, 42 city and 37 highway. In other words, the Prius trumps it, as daily drivers of those two vehicles have known for a long time. The changes will not only affect the window sticker, but also the effect that the C-Max Hybrid (and the five other Ford vehicles that had their fuel economy figures lowered last week) have on Ford's compliance with greenhouse gas and CAFE rules for model year 2013 and 2014. How did Ford come to this place, where its Prius-beater turned into an also-ran? There are two technical answers to that question, which we've got below, as well as some context for how Ford's mistakes will play out in the bigger world of green vehicles. Let's start with Ford's second error, which is easy to do since we documented it in detail last year (the first, needing to do a software update, was also covered). The basic gist is that Ford used the general label rule (completely legally) to test the Fusion Hybrid and use those numbers to figure out how efficient the C-Max Hybrid is. That turned out to be a mistake, since the two vehicles are different enough that their numbers were not comparable, despite having the same engine, transmission and test weight, as the rules require. You can read more details here. Ford's Said Deep admitted that the TRLHP issue is completely separate from the general label error from last year. Now let's move on to last week's announcement. What's interesting is that the new recalculation of the MPG numbers – downward, of course – was caused by a completely separate issue, something called the Total Road Load Horsepower (TRLHP). Ford's Said Deep admitted to AutoblogGreen that the TRLHP issue had nothing to do with the general label error from last year.

Cosworth double-feature is XCar's a drool-worthy look back

While American fans of Ford performance cars in the '80s and early '90s were loving the 5.0 Mustang, Taurus SHO and, for those who wanted to be a little different, the Merkur XR4Ti, British fans of the Blue Oval were getting their own unique take on speed. The Sierra RS Cosworth (which was similar but not identical to the aforementioned Merkur) and later Escort RS Cosworth were the stuff of dreams with huge wings, hood vents and big power for their time and class. XCar Films aims to find out whether it is little more than nostalgia that makes these classics famous or it really is their legitimate performance. Thanks to its Formula One and racing success, Cosworth was already a well-established performance name in the UK by the time it began selling tuned engines to Ford for the Sierra and Escort. The Sierra RS Cosworth hit the scene in 1986 with a turbocharged, 2.0-liter four-cylinder engine with 204 horsepower and rear-wheel drive. Its huge wing at the back signaled it immediately as something special, and it proved to be a performance powerhouse on and off the track. When it was retired, Ford replaced it with the Escort RS Cosworth that used an upgraded version of the same engine with 217 hp, all-wheel drive and an even bigger rear wing to net yet more racing victories. XCar really gets into the spirit of the time, opening the video with the lo-fi grain of '80s and '90s TV, but to find out whether the Cossies stand up to modern scrutiny, you have to watch the video below. Stay tuned until the end to enjoy them at their best with some vintage motorsports footage. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

IIHS crash tests second F-150 bodystyle

Sometimes, being the king comes with some extra scrutiny. At the urging of Automotive News, the Ford F-150 is the first truck to have multiple cab configurations crash tested by the Insurance Institute for Highway Safety. According to Automotive News, IIHS was preparing to release the crash-test report on the 2015 F-150 after the safety watchdog evaluated the popular, four-door SuperCrew body. However, the agency learned from AN that configuration contained steel bars welded around the front wheels for added protection. Those reinforcements aren't on the other cab variants, and IIHS is now going back to check a SuperCab without the strengthening to check its safety performance, as well. While the added bars might help the SuperCrew score better in the vital but difficult small-overlap front crash test, there's no guarantee that's their sole purpose. As the head of the IIHS crash lab Joe Nolan indicated to Automotive News, if Ford were just trying to beat the system the company could only put the reinforcement on the driver's side where the agency does the small-overlap test. Also, when the National Highway Travel Safety Administration checked the latest F-150, the Feds gave all three cab styles top, five-star overall ratings. Due to the additional testing, IIHS won't have the F-150's scores ready until July, according to Automotive News. Starting next year, the cab variants of other trucks will also starting being crash tested by the agency. Related Video: