Also included in the package is a boost gauge combined with an industry-first, programmable ladder tachometer mounted directly in front of the driver on the top of the steering column.

Other 2007 Ion Red Line highlights include:

- Standard leather seating surfaces
- Beefier equal-length halfshafts
- High-flow, performance-tuned exhaust system
- Four-wheel disc brakes with standard ABS
- Racetrack-tuned suspension, including revised springs, shocks, bushings and stabilizer bars
- 215/45Z R17 (Z-rated) performance tires
- 10-mm lowered ride height


*Horsepower and torque SAE certified. A new voluntary power and torque certification procedure developed by the SAE Engine Test Code committee was approved March 31, 2005 . This procedure (J2723) ensures fair, accurate ratings for horsepower and torque by allowing manufacturers to certify their engines through third-party witness testing. GM was the first automaker to begin using this procedure and expects to use it for all newly rated engines in the future.

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