exploreco97

I am looking at purchasing an HHR. Looking to find one with the 2.2 engine but want the chrome and sunroof package. I know they are out there in the 2.2 but have come accross some used ones just the way I like but they have the 2.4 engine and someone told me that you should use premium fuel but thought you could use regular. With the high gas prices right now that is why the 2.2 is more appealing.

Can you use regular with the 2.4? If so does it effect the mpg's? I am guessing the preformace would suffer. Looks to be a good car.

Thanks!

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04 Toyota Camry LE 57,000
05 Toyota Camry SE 48,000
97 Toyota Camry LE 198,000-sold

Old Lar

I have an 06 LT with auto and 2.4L.. I had been using 87 octane since purchasing the car new. At the beginning of 08, I tried an experiment using 93 octane for five tankfuls of gas. I averaged 30.3 mpg with 93 octane. My last five tankfuls using 87 octane I averaged 32.5 mpg. The cars computer will "detune" the car's timing to eliminate any pre detonation. There may be some loss in performance, but hardly noticable with my driving techniques.

Unless you are in for spirited driving, 87 octane works out well. With gas prices at $3.60+/gallon for 87 octane vs $3.80+ for 93 octane the $2 per fill up is better in my pocket than with Exxon.