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 |   |   |  New 2011 Saab 9-3 Twin Turbo Diesel - Web Exclusive
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New 2011 Saab 9-3 Twin Turbo Diesel - Web Exclusive

Sep 8, 2010

For Model Year 2011, all 9-3 diesel engines in Europe will use more advanced twin turbocharged engines and, in the sedan, all three engines give CO2 emissions of just 119g/km plus a combined-cycle fuel consumption of 52.3mpg US. The most powerful variant, the 180hp 1.9 TTiD, now delivers the most efficient performance for a four-cylinder diesel engine in the marketplace in terms of CO2 per unit of horsepower.

Eurp_1009_01_z+new_2011_saab_9_3_twin_turbo_diesel+rear_side_view Photo 2/2   |   New 2011 Saab 9-3 Twin Turbo Diesel - Web Exclusive

Saab engineers have delivered class-leading diesel performance following an 18-month development program which focused on achieving an average 12 percent reduction in fuel consumption and CO2 emissions. For sedan models, the result is emissions below 120g/km (a key vehicle taxation threshold in several European markets) and the cleanest and most efficient Saab ever.

By introducing twin turbochargers across the diesel range, Saab engineers have optimized the engines to harness more power and torque in the interests of fuel consumption and lower emissions.

The 1.9-liter diesel line-up now comprises a 130hp TTiD unit (replacing the previous 120hp TiD engine), a 160hp version (replacing the 150hp TiD engine) and a range-topping 180hp/295 lb-ft variant.

With these engines and manual transmission, the 9-3 sedan delivers outstanding combined cycle fuel economy of 52.3mpg US and 119g/km CO2 emissions.

The SportWagon offers an impressive 51mpg US and low CO2 emissions of 122g/km and for the Convertible, the respective figures are 45.2mpg and 137g/km.

To dip under the 120g/km level, optimized gearing is fitted without affecting acceleration or top speed.

Other efficiency measures include:

  • Recalibrated engine management with improved fuel injection and combustion control
  • Revised gear ratios to match new power and torque characteristics
  • Improved electrical power management, including alternator control when battery charging is not required and more efficient electro-hydraulic power steering assistance
  • Low rolling-resistance tires
  • Improved aerodynamics, with rear underbody deflector blades
  • Reduced weight through lighter construction and sound-deadening materials
  • Revised torque converter for automatic transmission with optimized shift programming.

The all-turbo gasoline line-up, which features an average reduction in fuel consumption and CO2 emissions of 7 percent, also benefits from some of these measures.

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