Skip the auto shop - Our mechanics make house calls

Q: Mileage per gallon has decreased

asked by on

Hello, I used to give my car in Acura showroom, at 82K I did B2 service in Acura that time the mileage was local 17 long drive 23 . At 89K miles I have given it in Firestone for service and they used Penzoil Platinum engine oil but not sure what else they did but after that it started giving less mileage avg 14.5 local , 20 on highways. so in the next service at 93K miles I changed the only the oil in Acura showroom and its became even worse its only 13.5 local 17.5 on highways. I am unable to understand what is wrong. my car is Acura MDX 2008, mileage 93500.. I doubt that when I gave service in Firestone. Can you suggest what needs to be done to bring my vehicle back old mileage
My car has an automatic transmission.

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Transmission leaked all of the fluid out

It is possible that a cooler line has sprung a leak for your transmission. The only other explanation for rapid fluid loss in a transmission is that the oil pan has been punctured by some road debris. I would recommend...

Q: I want to know whether to buy a 2014 Subaru Legacy

Hi there: Actually, if I were you, I'd be glad to see that 2,500 mile oil change. It shows me that the owner is proactive about vehicle maintenance and not that you've got an oil burning car at all. The...

Q: Smoke blows from tail pipe

If you are getting excessive pressure build up in the crankcase, then you may have a clogged crankcase breather system. If the breather system is clean, then you may have a broken piston ring causing the buildup. Have the breather...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...