Saab 9 3 I 1 YS3D owners manual page 176

text version of content this owner's manual page from owners manual to the vehicle Saab 9-3, year of production 1998 - 2002:

176 Starting and driving Economical motoring the engine has started from cold. Thus, if the car is mainly used for short journeys of Factors affecting fuel consumption 3–5 miles (5–8 km), the fuel consumption Fuel consumption is greatly affected by the will be 60–80 % higher than normal. general driving conditions, the way in which Driving technique the car is driven and at what speeds, the • To obtain the best running economy, not weather, the state of the road, the condition only regarding fuel consumption but gen- of the car, etc. eral wear also, regular service is required. Breaking-in • High speed, unnecessary acceleration, Fuel consumption may be somewhat higher heavy braking and much low gear work all during the break-in period (the first 3,000– gives rise to higher fuel consumption. 4,000 miles (5,000–7,000 km). • Frequent gear changing in traffic, starting Weather conditions IB311 in cold weather, the use of studded tires Fuel consumption can be as much as 10 % and roof racks, and towing a trailer all lower in summer than in winter. The higher Percentage increase in fuel consumption increase fuel consumption. consumption in cold weather is explained by of engine starting from cold compared to • Do not run the engine when the car is sta- the longer time it takes for the engine to engine at normal temperature tionary. reach normal operating temperature, and If idling, it will take much longer before the for the transmission and wheel bearings to engine becomes hot. Engine wear is warm up. Fuel economy is also affected by How to read the graph: greatest during this warming-up phase. the distance driven: short journeys of If fuel consumption with the engine at Therefore drive away as soon as possible 3-5 miles (5-8 km) do not give the engine normal temperature is 28 mpg after the engine is started and avoid high enough time to reach normal temperature. (10l/100 km), the actual fuel consumption 3 revving. Strong winds can also affect fuel consump- miles (5 km) after the engine has started tion. from cold will be: – 23.5 mpg (12l/100 km) at outside temp. of 68°F (20°C) (increase of 20%) – 17.7 mpg (16l/100 km) at outside temp. of 32°F (0°C) (increase of 60%) – 14 mpg (20l/100 km)) at outside temp. of –4°F (–20°C) (increase of 100%) As can be seen, both the distance travelled by the car and the outside temperature have a major impact on fuel consumption after

owners manual Saab 9-3

owners manual Saab 9-3 - year of production: 1998, 1999, 2000, 2001, 2002 - Saab 9 3 I 1 YS3D owners manual EN