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Much like putting four cylinder turbos into everything, the fuel savings is more theoretical than real. If you drive in the summer and come to a stoplight, most cars will shut off for 20-30 sec tops. Any longer and they can’t keep the A/C cold. So your 4 minutes sitting at a stoplight is still mostly with the engine running, but with accelerated starter wear as a bonus!
Note that some hybrids have electric A/C compressors so that changes the dynamic. But hybrids are sort of a different beast anyway.
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‘07 Mazda RX8
Past: 911T, 911SC, Carrera, 951s, 955, 996s, 987s, 986s, 997s, BMW 5x, C36, C63, XJR, S8, Maserati Coupe, GT500, etc
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