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Submit your questions for Autoblog Podcast #317 LIVE!

We record Autoblog Podcast #317 tonight, and you can drop us your questions and comments regarding the rest of the week's news via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #317
Mitsubishi Mirage

McLaren working on P15 supercar to slot between 650S and P1

McLaren has been busy these past few years. It launched the MP4-12C in 2011, the 12C Spider in 2012, the P1 in 2013 and (most recently) the 650S in 2014. But it's not about to stop there. It's got an "entry-level" model in the works, set to take on the Porsche 911, and - according to information reported by Car and Driver and confirmed by McLaren in correspondence with Autoblog - a new flagship model, too.
The project is internally codenamed P15, and it calls for a new flagship that will cap the company's lineup once the P1 finishes its limited production run, but carry a price tag in the neighborhood of $500k to slot in between the P1 and the new 650S.
Just how, you wonder, can McLaren possibly develop another supercar each year? Simple: underneath, they're all essentially the same. (Only we're sure it's anything but simple.) That is to say they're all based on the same carbon monocoque structure and powered by the same 3.8-liter twin-turbo V8 mated to a seven-speed dual-clutch transmission driving the rear wheels. What differentiates them is what the engineers in Woking build around that monocoque and how they tune the engine: +/- 600 horsepower in the 12C (depending on the year it was built), 640 hp in the 650S, or 727 hp in the P1 (with another 177 from the electric assist). The 911 fighter would likely develop in the 500hp range, and the P15 will probably land in the upper 600 (or lower 700) range.

Why Honda of America won't fit 2014 Fit models with start/stop

One of the most recent yet notable additions to the modern vehicle's growing suite of fuel-saving technologies is the humble start-stop system. It's rather simple - when the vehicle is stopped, the engine shuts off. It then fires back up when the driver starts to take his foot off the brake or step on the clutch. For one of the most important fuel sippers of the year, though, start-stop tech is a no-go.
Honda will not be offering the system on the North American-spec, non-hybrid Fit despite it being a standard item on both the hybrid (pictured above) and gas-only Japanese domestic models. According to Honda, it's ostensibly due to the momentary lag, that occurs when the gas engine re-fires and power is available. The start-stop-equipped Fits "will lose at stoplights to V6s," Nobuhiko Shishido, the lead powertrain engineer for the Fit, told Automotive News. This is just an observation on our part, but unless the new Fit turns up with dramatically more than the current car's 117 horsepower, it'll "lose at stoplights" regardless of whatever fuel-saving features are fitted.
The other issue Honda sees is more realistic. In the world of the EPA, stop-start systems are not taken into account in fuel economy testing. That makes the cost-adding technology a tough sell for US consumers who are forced to take a dealer's word on real-world economy gains over the milage numbers on the window sticker. That said, wouldn't it at least make sense to offer start-stop as an option? Have your say in the Comments below.