DEARBORN – Advanced electronics in the '06 Lexus IS 250 and IS 350 are contributing to a paradigm shift in Washington's Fuel Economy Guide. Manual transmissions almost always deliver better fuel economy, but the re-engineered entry-level sports sedan from Toyota Motor Corp.'s luxury brand gets better fuel economy with an automatic. Differences range from 1 mpg to 5 mpg (0.4 km/L to 2.23 km/L). '06 Lexus IS 250 and IS 350 (above) due to arrive in showrooms by October. The ...

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