Saab has just tweaked the diesel versions of the 9-3 to reduce the fuel consumption and CO2 emissions. Over in Europe, the Saab is available with a 1.9L turbodiesel four in two power flavors. The milder single turbo 150 hp variant is now rated at 44.4 mpg (U.S.) in the sedan or 42.8 mpg (U.S.) in the wagon. The CO2 emissions of the two body styles are now at 139 g/km and 144 g/km respectively. The average 7 percent gains in efficiency are due to revised gearing, taller (lower numerical) final drive ratio, revised engine calibrations and lower rolling resistance tires.


[Source: Saab]

PRESS RELEASE:

Lower CO2 Emissions for Saab 9-3 Diesels

Saab's most popular 9-3 diesel models now offer reduced CO2 emissions and improved fuel consumption.

Linear and Vector specification Sport Sedans, powered by the 150 hp/110 kW, single turbo or the 180 hp/132 kW, two-stage turbo 1.9-liter engine, now produce just 139 gm/km CO2 and impressive fuel consumption of 5.3 l/100 km over the combined cycle. The SportCombi's figures are also improved, to 144 gm/km and 5.5 l/100 km.

In terms of CO2 grams per horsepower, the two-stage turbo models (badged 1.9TTiD) are now among the top performers in their class.

The efficiency gains, averaging 7 percent, have been achieved by a series of fine-tuning measures including: the use of wider gear ratios, a longer final drive, idle and low engine speed remapping, and an optimized tire and wheel choice. Zero to 100 km/h acceleration is unchanged, while fifth gear 80-120 km/h times are increased by less than one second.

The new variants are available only with manual transmission. In many European markets, the CO2 reductions also provide valuable tax-related benefits for customers.


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