LA Times (April 2, 2008) 

Motorcycles get about 50 miles to the gallon. That's a general statistic trotted out by motorcycle manufacturers, government representatives, individual riders, your mailman. But specific MPG figures for specific models? That's been difficult to find.

 There are any number of reasons why motorcycle manufacturers have been loath to give actual MPG figures for actual models with any consistency. Bikes are already fuel-efficient, so differences in their MPGs aren't considered as important. Besides, actual MPGs vary wildly depending on how a bike is ridden.

Even more significant, there isn't an industrywide protocol for motorcycle MPG testing. Unlike with cars, federal law doesn't require motorcycle manufacturers to perform fuel-economy tests or, if they do, to reveal their numbers, since bikes make up such a small percentage of overall vehicles and already get such great mileage.

But with gas prices nearing $4 per gallon and increasing numbers of commuters considering two wheels as a more economical way to get around, manufacturers are beginning to play the MPG trump card as a means of wooing customers in a down market.

On Tuesday, Yamaha released specific MPG figures for the six scooters in its model lineup. Less publicly, but more significantly, Yamaha is also making MPG figures available for its 27 other street bikes; dealers and customers just need to call Yamaha's customer relations department ([800] 962-7926) and ask for them.

In May, Suzuki will also expand its offering of fuel-economy specifics in an ad campaign that will trumpet MPG figures for half of its street bikes and scooters, including its SV650 (which boasts 54.8 mpg), Burgman 650 (38.1 mpg), Bandit 1250 (39 mpg) and other models.

Source of the numbers

Since there's no standardized motorcycle MPG test, where are these fuel-economy figures coming from? In the case of Yamaha, Suzuki and Harley-Davidson (which has been providing MPG figures since 1982), they're based on the EPA emissions test the manufacturers are already required to perform to sell bikes in the United States.

The Federal Test Procedure, or FTP, is a specific protocol "designed to measure a vehicle's tailpipe emissions under urban driving conditions," according to EPA regulations. Run on a chassis dynamometer, as opposed to a track or streets, it involves a series of accelerations, decelerations, idling, cold starts and hot starts and covers a distance of 11 miles. The average speed is 21 mph. The average ambient temperature: 75 degrees.

Although the FTP is designed to measure the various pollutants spewing from a tailpipe, the CO2 produced during the test can be used to calculate MPG as well. Absent an official, government-mandated fuel-economy test for motorcycles, the FTP, it seems, is becoming the de facto procedure.

Automobile manufacturers are also legally required to use the FTP, plus four other tests. Together the tests are designed to represent real-world driving conditions and determine a vehicle's fuel economy. The city and highway estimates are based on a combination of data from all five tests.

While Harley-Davidson uses the FTP to determine city mileage figures, the majority of FTP-derived motorcycle MPGs don't distinguish between city and highway riding. Nor do these MPGs represent real-world riding conditions, as reflected in the four additional tests required of automobile manufacturers, because they were never intended to measure a motorcycle's fuel economy -- just its emissions. That's why the MPGs offered by motorcycle manufacturers often come with the term "estimated," as well as various disclaimers that will let the manufacturers' legal departments rest easy if real riders in the real world end up with fuel-economy numbers that are less than what the manufacturers claim.

The Yamaha disclaimer, for example, says a rider's actual mileage "will vary depending on road conditions, how they ride, and the maintenance of each vehicle, vehicle accessories, cargo that may be carried and the operator's and passenger's weight."

That's a lot of variables, but that's also a short list. Real-world mileage is also affected by a rider's clothing and body shape, as well as ambient air temperature, altitude, weather and road conditions, among other things.

4/2/08 HOTEL ROOMS HERE FOR HARLEY'S 105th (Click HERE to read entire article).

3/6/08 Club H.O.G. 25th - NO Aerosmith (Click HERE to read entire article).

1/21/08 Bruce Springsteen Headliner for Harley (Click HERE to read entire article).

7/18/07 Harley-Davidson's Womens Day in Sturgis (Click HERE to read entire article).

7/17/07 Live Well, Laugh Often, Love Much (Click HERE to read entire article).

4/6/07 ‘Idol’ standout coming to Buffalo Chip (Click HERE to read entire article).

4/5/07 Ratt coming to Buffalo Chip (Click HERE to read entire article).

4/4/07 New location in Sturgis for S&S Cycle (Click HERE to read entire article).

3/20/07 Poison to Play at the Buffalo Chip in Sturgis. (Click HERE to read entire article).

3/19/07 Harley-Davidson and Michelin Tires (Click HERE to read entire article).

3/19/07 2007 V-Twin Award Winners (Click HERE to read entire article).

3/19/07 2007 V-Twin Award Winners (Click HERE to read entire article).

4/1/06 Johnny "Vasko" Chop - One of a kind..... (Click HERE to read entire article).

2/24/06 Harley unveils museum's design (Click HERE to read entire article).

2/18/06 MYRTLE BEACH'S CRUISIN' THE COAST (Click HERE to read entire article).

2/18/06 Legend's Top 50 Rally Park -Sturgis (Click HERE to read entire article).

2/18/06 Deland Bike Rally - Sat. March 4th, ONE DAY ONLY! (Click HERE to read entire article).

12/31/05 Party Picks for 2006 (Click HERE to read entire article).

12/29/05 Hollister NO MORE? - BIKER FREE ON THE FOURTH (Click HERE to read entire article).

12/20/05 Indonesia's motorcycle production rises 34% (Click HERE to read entire article).

12/20/05 Honda's CEO 2005 Year End Summary (Click HERE to read entire article).

12/20/05 Family buying site for Motorcross Park (Click HERE to read entire article).

10/15/05 Watch for our FREE 2006 Biker InCite Rally Maps! (Click HERE to read entire article).

10/4/05 Steel Pony Express VIII ***LATEST NEWS*** (Click HERE to read entire article).

9/30/05 Biker InCite in the news! (Click HERE to read entire article).

9/25/05 Daytona Bike Week Map (Click HERE to read entire article).

9/20/05 Lone Star Rally Rescheduled (Click HERE to read entire article).

8/23/05 Destination Daytona is open! (Click HERE to read entire article).

1/24/05 Annual Motorcycle Sales Roar (Click HERE to read entire article).

8/11/03 Harley 100th Anniversary Celebration Event Map™... (Click HERE to read entire article).

12/2/98 New Headline (Click HERE to read entire article).