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The time it takes to accelerate from 0 to 60 mph (0 to 97 km/h) is a commonly used performance measure for automotive acceleration in the United States and the United Kingdom. In the rest of the world 0 to 100 km/h (0 to 62 mph) is used, and it takes about 0.1 or 0.2 seconds longer to reach 62 mph, than it does to reach 60 mph.^{[citation needed]} Present performance cars are capable of going from 0 to 60 mph in under 6 seconds, while exotic cars can do 0 to 60 mph in between 3 and 4 seconds, whereas motorcycles have been able to achieve these figures with sub-500cc engine for more than 20 years. The average car as of 2009 gets from 0 to 60 mph in 8.4 seconds^{[citation needed]}. The Bugatti Veyron is currently the fastest production car to reach 60 mph from a stop, reaching the speed in 2.46 seconds.^[1]

Contents 1 Significance and perspective 2 Criticism of magazine testing 3 See also 4 References 5 External links

[edit] Significance and perspective

There are a number of ways to measure a car's performance. It has been suggested that power-to-weight ratio be used as a standard for identifying "high performance" vehicles. Unfortunately, this ratio overstated the capacity for acceleration prior to 1972, because gross horsepower was used. In essence, the 15% or so horsepower robbed by accessories was disregarded. Beginning with model year 1972, net horsepower was quoted. Net horsepower takes into account the real world scenario wherein accessories, such as the alternator, rob the engine of some power. Vehicles manufactured prior to the mid-1950s—when accessories like power steering and air conditioning started to become more commonplace—usually had no accessories to drive beside a generator, water pump, and fan, so the period of distortion lasted only about 20 years.

Using 0-60 mph as a yardstick for performance, the gross versus net distinction is irrelevant, and performance from ancillary advancements (eg. tires, transmissions) is accounted for.

While the future may hold numerous 0-200 mph tests, an eye on 0-60 mph allows direct comparison with cars going all the way back to the earliest "supercars", which arguably could include the Bugatti Type 35.

This is only one of many forms of performance testing used by automobile manufacturers and press to determine overall performance. Other notable tests include braking distance, 0-100-0 mph, drag racing over a quarter mile, and cornering^[2].

[edit] Criticism of magazine testing

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Automobile magazines often post 0-60 mph times that they achieve in testing. Many have questioned the practices and methods used to test the automobiles. Typically criticism revolves around:

• "Roll out" here the car is allowed to roll for a certain amount of time or distance before the timing begins.^[3]
• General conditions: Air temperature, altitude, fuel level, etc.
• "Factory Freaks" which would be abnormally quick stock automobiles
• The public's inability to achieve such low times
• High level of differences between magazines
• Possible bribery or other unethical practices of the testers
• Optimizing the car's performance by making setup changes such as tire pressure
• The ability of the particular driver

[edit] See also

• List of fastest cars by acceleration
• Vehicle metrics

[edit] References

[edit] External links

• "0-60mph times". Zeroto60times.com. 2008-06-08. http://www.zeroto60times.com/. 
• "0-60mph times". autolounge.net. 2008-01-02. http://www.autolounge.net/misc/specs.html. 
• "0-60mph times". albeedigital. 2008-01-02. http://www.albeedigital.com/supercoupe/articles/0-60times.html. 
• "0-60mph times". TorqueStats.com. 2009-01-01. http://www.torquestats.com/index.php?pid=mph60. 
• "0-60mph times". speedvsmpg. 2008-05-07. http://www.speedvsmpg.com/0-60-times-mpg/.