Quote:
Originally Posted by puddleglum
If you are doing lots of short trips in below freezing temps without plugging in or doing any stay warm mods that is going to kill your mileage. Your thermostat is probably fine, it just never gets warm enough to open. At very least plug it in below freezing. Raising your tire pressure is going to help your mileage and hurt the ride with any tire IMO. Always a trade off. Find one with a good LRR and comfort rating and keep them at factory recommended pressure.
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Yup, my Prius is just over 25MPG this tank because of the cold and almost all the trips have been less than 2 miles (shame!). The block heater helps a bit, but with such short trips, it only helps so much.
Manual or CVT Civic?