At what speed does the HHR start to get poor mileage?
01-20-2016, 03:59 AM
#1
Senior Member
Thread Starter
Join Date: 09-06-2015
Location: Tulsa, OK
Posts: 154
At what speed does the HHR start to get poor mileage?
My mom used to have my HHR and she said she often got more than 30 MPG on the highway. She lives in an area of Arkansas where the maximum speed limit is 55, and I live in an area of Oklahoma with 75 MPH turnpikes. I've noticed that if I keep it at 65 or below that I get good gas mileage but if I get over 70 then it seems to drop quite dramatically. At what speed does your car get optimal mileage?
01-22-2016, 07:38 AM
#8
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Join Date: 09-11-2015
Location: Stevens Point, WI
Posts: 273
It's got little to do with make/model of car...typically about 60 is the fastest you can go before you start experiencing a rapid fall off in MPG. It's a product of parasitic drag, so the more "stuff" you got sticking off your vehicle, or the less aerodynamic your body style is, the lower that speed will be.
When I was driving semi long haul, 55 would give the best MPG, but who's gonna go that slow..??..I settled for 65 and paid for the extra fuel. Incidentally, when I started driving I'd spend about $25,000 to $30,000 a year on fuel...my last couple years of long haul that had gone to well over $100,000 a year, I think the last year was $118,000.00
When I was driving semi long haul, 55 would give the best MPG, but who's gonna go that slow..??..I settled for 65 and paid for the extra fuel. Incidentally, when I started driving I'd spend about $25,000 to $30,000 a year on fuel...my last couple years of long haul that had gone to well over $100,000 a year, I think the last year was $118,000.00
01-22-2016, 08:35 AM
#9
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Join Date: 06-26-2006
Location: San Bernardino, California
Posts: 1,876
It's got little to do with make/model of car...typically about 60 is the fastest you can go before you start experiencing a rapid fall off in MPG. It's a product of parasitic drag, so the more "stuff" you got sticking off your vehicle, or the less aerodynamic your body style is, the lower that speed will be.
When I was driving semi long haul, 55 would give the best MPG, but who's gonna go that slow..??..I settled for 65 and paid for the extra fuel. Incidentally, when I started driving I'd spend about $25,000 to $30,000 a year on fuel...my last couple years of long haul that had gone to well over $100,000 a year, I think the last year was $118,000.00
When I was driving semi long haul, 55 would give the best MPG, but who's gonna go that slow..??..I settled for 65 and paid for the extra fuel. Incidentally, when I started driving I'd spend about $25,000 to $30,000 a year on fuel...my last couple years of long haul that had gone to well over $100,000 a year, I think the last year was $118,000.00
Title of thread:
At what speed does the HHR start to get poor mileage?
01-23-2016, 01:52 AM
#10
Senior Member
Join Date: 03-22-2010
Location: Russia Ekaterinburg
Posts: 2,009
the higher the engine speed, the greater the consumption of gasoline. The engine speed is falling sharply during the next gear change (arrow goes down), but the crackdown continues. Keep an eye on the tachometer. Thus you can find the best option for any tempo driving.
I do remember my upper stage - 87km / h or 53 miles / h. Previous I do not remember unfortunately.
I must say, the upper level creates some conflict between me and the traffic police. We have a speed limit in the city 36 Miles / h, exceeding more than 48 miles / h - reason for the fine.
I do remember my upper stage - 87km / h or 53 miles / h. Previous I do not remember unfortunately.
I must say, the upper level creates some conflict between me and the traffic police. We have a speed limit in the city 36 Miles / h, exceeding more than 48 miles / h - reason for the fine.