Mazda 6

From Mazda press: For the 2010 model year, MAZDA6 offers minor trim and package enhancements.  To streamline the most popular options, a new Touring Plus model is added to both the i as s models, which adds power moonroof, ground illumination, Bluetooth, electroluminescent gauges, Blind Spot Monitoring System and anti-theft security alarm, in addition to Touring trim features. 

A new Technology Package is offered on Grand Touring models and a Multi Information Display (MID) for the audio and Bluetooth is standard on Grand Touring trims with Technology Package.

"The MAZDA6 driving experience is unlike any other mid-size sedan, able to handle the track or city streets with grace," said Robert Davis, senior vice president, product development and quality, MNAO.  "Offering such features as xenon headlights, keyless entry, push-button start, heated mirrors, Sirius satellite radio and Blind Spot Monitoring System, the MAZDA6 is poised to remain a serious threat in the segment."

A 2.5-liter 4-cylinder engine is available and heads the mid-size class with 170 horsepower at 6,000 rpm.  Its peak torque of 167 lb-ft at 4,000 rpm tops nearly all competitors' engines.  EPA fuel economy is 21 city/30 hwy on automatic and 20 city/29 hwy on manual transmission.

Bore and stroke increases over previous applications yield a piston displacement enlarged to 2.5-liters (2489cc).  Advanced features include chain-driven dual overhead camshafts, four valves per cylinder, counter-rotating balance shafts located in the oil pan, and aluminum block and head construction to save weight.  The crankshaft is forged steel for utmost durability. Forged connecting rods minimize reciprocating weight.
Variable intake valve timing yields a smooth idle, low emissions, and excellent high-rpm power. 

An injection-molded, nylon-reinforced-plastic intake manifold provides smooth internal passages with minimal weight.  Fuel is delivered to the intake ports by an electronically controlled sequential injection system.  Ignition coils are modular units positioned directly above the spark plugs. Shimless bucket tappets require no maintenance.  Light-weight pistons are coated with a special anti-friction compound and fitted with low-tension rings for improved gas mileage.

Several features designed especially for maximum power in the MAZDA6 i application include a cylinder head with improved intake and exhaust flow, a low-restriction exhaust manifold, and a two-mode intake manifold with a center entry and an electronically-controlled throttle body.

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