• Apr 25, 2007
Honda has done some amazing things with engines over the years, with a string of silky-smooth powerplants that, despite their small size, pump enough juice to the front wheels to keep even the ardent enthusiast happy. Perhaps even more exciting is that Honda manages to provide pop at the pedal, while consistently showing up at the top of the fuel economy charts.

If there was ever a vehicle that Honda could allow to be a bit of a gas hog, it would be the next-generation Acura NSX, which is rumored to be powered by a 5.0L V10 with 500hp. But with all the success Honda has enjoyed as an environmentally-friendly company, management and engineers decided not to rest on their laurels. The goal for team Honda is to achieve a combined fuel economy of 23.5 mpg, which would be great for most vehicles, much less a low-volume supercar. To put 23.5 mpg from a free-revving, 500hp V10 into perspective, the V10 Dodge Viper averages 12/20 city/highway. Heck, the previous generation NSX struggled to achieve 20 mpg, and it had a 3.2L V6 rated at 276 hp.

The folks over at Honda have created quite the stir surrounding the soon-to-be-unveiled NSX, and with 500hp and great fuel economy, we're more excited than ever for this year's Tokyo Motor Show.

[Source: Left Lane News via Winding Road]


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  • 50 Comments
      • 7 Years Ago
      Reading headlines like this irks me. I own a Honda CR-V with 150 horsepower, yet I only get 21.5 miles per gallon.
      • 7 Years Ago
      Mike,

      Could you maybe have condensed all your comments into one instead of spamming this post with all your blather?

      Many thanks and regards,

      Rob
      • 7 Years Ago
      The report actually says they are shooting for 10.0km/l. Under the Japanese rating, this would be a combined city/highway number. A 23.5 MPG combined would be impressive, seeing as how in Japan the 4cyl Accord get 12.0km/l and the current NSX gets 9.0km/l.

      Check out... http://vtec.net/forums/one-message?message_id=676194&news_item_id=676176 ...it explains it a bit better.

      You can all calm down with the Honda-hate now.
      • 7 Years Ago
      Pushrods are beautiful - they allow a compact package with less weight and complexity than fancy overhead cams and variable valve timing. There's some frictional loss in the valvetrain of a pushrod engine that is reduced by overhead cams using direct acuating bucket followers, but those setups are harder to snuggle low in the chassis and package efficiently. DOHC heads take up a lot of room, so mid engine or front engine, the CG will usually be higher and to make room for the plumbing you're eating into the passenger compartment or hanging the engine further forward than you'd like to.
      • 7 Years Ago
      #15...I don't think they ever did that in the Corvettes, I know they don't anymore. They did that from 1993-2002 (I think, maybe only until 1997 when the LS1 replaced the LT1 but I'm not sure) Camaros for sure and it was really annoying but it was supposed to "improve fuel economy"
      • 7 Years Ago
      "To put 23.5 mpg from a free-revving, 500hp V10 into perspective, the V10 Dodge Viper averages 12/20 city/highway."

      You are also comparing a 8.4l to a (rumored) 5.0l, and the 8.4 has 600HP/580tq, easily tunable with mopar parts to 650+hp, AND meets federal Tier 2, Bin 5 and California's Low Emissions Vehicle (LEV) 2 mandates, and is expected to better the '07's 12/20mpg

      Viper power curve:
      RPM HP TQ
      2400 225 495
      3700 410 550
      4800 524 570
      6000 613 535
      • 7 Years Ago
      What cracks me up is that this thing isn't even close to out yet, but everyone wants to talk like they've driven it for a week or two and at least a tank's worth of gas.

      To all you massively mistaken folks wanting to compare MPG, note that Honda's release says 23.5MPG on the JAPANESE COMBINED TEN-FIFTEEN TEST. Yes, that's right, it's a different test entirely, that none of you have vette viper or m5 or numbers for. So stuff it.
      • 7 Years Ago
      It's not that magical actually it's all about the displacement and engine management. A 5.0L V10 is kinda small. Manage the fuel right and you could get 25 MPG highway pretty easily with 500 peak HP. That engine is probably capable of 800 HP.

      There was a story not too long ago on here about a 2.0L V10 making 300 HP and averaging 35 MPG I think.
      • 7 Years Ago
      with looks like that, they'll have to give them away with free supermodels. Blech!
      • 7 Years Ago
      "The M5's 12 mpg (19.6 L/100 km) city/18 mpg (13 L/100 km) highway rating earns it a $3700 gas-guzzler tax."

      "911 Turbo is equipped with a standard 3.6-liter, H6, 480-horsepower, turbo engine that achieves 18-mpg in the city and 25-mpg on the highway."

      "Z06 is rated a commendable 16 miles per gallon in town, 26 on the highway. The trip computer in the test car showed 15.1 mpg around town, driven with the modest amount of restraint possible in such a machine." And the Z06 comes with enough plastic to make all my kids' Playskool toys.

      Not totally sold on the NSX just yet, but let's see real world results with the SH-AWD.

      • 7 Years Ago
      Vette v8 has 3x the torque of a 5L V10??? Might have more, might have less, but no way the diff is going to be 3X. Put down the crack pipe son.
      • 7 Years Ago
      Aki is right. No one mentioned the vette and you guys are already on the defensive. Just goes to show how insecure you are.
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