Additional Details
1 month ago
is the three different types just different speeds? or types of the car that you can buy?%26lt;quote%26gt;
Q: How is the fuel consumption test conducted.
A: The test is outlined in Directive 93/116/EC and provides results that are more representative of actual average on-road fuel consumption than previous tests. There are two parts: an urban and an extra-urban cycle. The cars tested have to be run-in and must have been driven for at least 1,800 miles (3,000 kilometres) before testing.
Urban Cycle:
The urban test cycle is carried out in a laboratory at an ambient temperature of 20oC to 30oC on a rolling road from a cold start, i.e. the engine has not run for several hours. The cycle consists of a series of accelerations, steady speeds, decelerations and idling. Maximum speed is 31mph (50km/h), average speed 12mph (19km/h) and the distance covered is 2.5 miles (4km).
Extra-Urban Cycle:
This cycle is conducted immediately following the urban cycle and consists of roughly half steady-speed driving and the remainder accelerations, decelerations, and some idling. Maximum speed is 75mph (120km/h), average speed is 39mph (63 km/h) and the distance covered is 4.3miles (7km).
Combined Fuel Consumption Figure:
The combined figure presented is for the urban and extra-urban cycle together. It is therefore an average of the two parts of the test, weighted by the distances covered in each part.
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You can get some pretty graphs of many of the different governmental fuel ecomomy test cycles here:
http://www.epa.gov/otaq/emisslab/methods...
Which is taken from: http://www.epa.gov/nvfel/testing/dynamom...
Other Answers (3)
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Urban - around town
Extra-Urban - on the motorway/freeway/autobahn
Combined - a bit of both... -
Earlier answer gives you the right links. But these tests are not very effective measures of the actual economy of the car when you actually use it.
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1. Around town
2. Motorway
3. Consumption at optimum 56mph