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Author Topic: does Tune-up = improved fuel efficiency? Back to Topics
lookupthesky

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New Jersey

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Message Posted: Jun 13, 2011 12:59:46 PM

I am considering getting a tune-up: changing filters, spark plugs, flush radiator/coolant, and oil change.
Would my car get from 27mpg to 31mpg+?
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forestghost07
Champion Author Miami

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Message Posted: May 22, 2013 12:13:51 AM

of course it does :)

as for your MPG, what's your car rated at by the mfr?
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GLM4205
Champion Author Toledo

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Message Posted: May 18, 2013 6:19:52 PM

Sometimes it does.
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63pioneer
Champion Author Texas

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Message Posted: May 13, 2013 5:07:33 AM

It should unless you have other problems with the car!
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Wanda127
Champion Author Florida

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Message Posted: May 12, 2013 11:04:39 PM

I think it does. I'm getting ready to do one on my 2006 HHR now because the mpg has gone down & it has 106K miles on it. They recommend it be done around 104k.
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Wrench45840
Rookie Author Ohio

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Message Posted: May 12, 2013 9:13:24 PM

I agree with davisadm but what has affect on the modern car is engine temperature and exhaust Temperature. So I replace the thermostat every 2 years or so and O2 sensors about every 100K just because they don't seem to set hard codes when they go bad except the heater circuit and they control how rich or lean to make the fuel mixture based on Exhaust temperature. Sparkplugs and wires 50-75K fuel filter every year air filter every 30K.
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davisadm
Champion Author Los Angeles

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Message Posted: May 12, 2013 4:50:52 PM

"Would my car get from 27mpg to 31mpg+?"
Depends how long you have let regular required maintenance go. If you have really let it go yes. Radiator flush would have little impact on mileage, same with oil changes (but it would destroy your engine faster). Filters, plugs, wires cap & rotor, O2 sensors have the most impact.
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smugutu1234
Champion Author Tallahassee

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Message Posted: May 11, 2013 9:34:50 AM

Sometimes it does.
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OilerFan
Champion Author Tulsa

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Message Posted: May 11, 2013 8:55:37 AM

Yes, it does.
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carinthuist
Champion Author San Francisco

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Message Posted: May 10, 2013 5:19:16 PM

Yes
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kellyoneal
Champion Author Louisville

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Message Posted: May 10, 2013 2:46:56 PM

yes
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weddy11
Champion Author Phoenix

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Message Posted: May 9, 2013 9:56:32 AM

I seriously doubt it would improve that much.
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IAMCANADIAN73
Champion Author Ontario

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Message Posted: May 9, 2013 8:41:54 AM

For sure
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IAMCANADIAN73
Champion Author Ontario

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Message Posted: May 9, 2013 8:41:45 AM

Yes
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mybigtruck
Champion Author San Jose

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Message Posted: May 7, 2013 4:00:20 PM

It depends... if they're all trashed, sure you might get some improvement back to where the car was performing when it was new. If they're all in good condition, you probably won't notice anything different other than lightening your wallet.

[Edited by: mybigtruck at 5/7/2013 4:02:11 PM EST]
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carinthuist
Champion Author San Francisco

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Message Posted: May 7, 2013 1:02:05 PM

Yes
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sks1586
Champion Author New Jersey

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Message Posted: May 7, 2013 12:49:36 PM

Thanks a million for the question & the great comments (even though random contrasting @ times)
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Houckster
Champion Author Atlanta

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Message Posted: May 7, 2013 8:25:26 AM

Modern cars don't need tune-ups like the cars once did. We can thank auto emissions standards for this. Poorly tuned cars pollute and to comply with the feds, the OEMs had to upgrade just about everything. My brother, for example, just changed the plugs on his wife's car and they had about 200K on them. Most modern cars can go about 100K before any substantial maintenance is required. In contrast when I got my first car, a 1966 Mustang, it really needed a tune-up after 10K.

With regard to the LOOKUPTHESKY's question about increased mileage, the answer must be a definite maybe. A tune-up will RESTORE lost mileage. It will NOT give one more mileage over that which it got when new.

[Edited by: Houckster at 5/7/2013 8:28:22 AM EST]
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giwan
Champion Author Michigan

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Message Posted: May 7, 2013 12:15:18 AM

The definition and need of a tune up has changed greatly. I highly doubt those changes will show you any effect
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fistr
Rookie Author Lansing

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Message Posted: Jul 15, 2012 11:35:38 AM

If needed a tune up will increase fuel economy
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john4122
Rookie Author Ohio

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Message Posted: Jul 15, 2012 6:46:12 AM

It sure does
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BlueberryFocus
All-Star Author Rochester

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Message Posted: Jul 14, 2012 12:20:22 AM

A properly functioning vehicle will always run more efficiently, so if something is wrong get it fixed. lol
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2amy
Champion Author Fresno

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Message Posted: Jul 13, 2012 8:11:44 PM

Personally it all depends on how bad the car needs a tune up. Just to get one to save fuel IMO is not going to get your moneys worth. You could spend hundreds of dollars to get your car properly tuned and MAYBE get 1 or 2 mpg better.
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PhilnTX
All-Star Author Dallas

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Message Posted: Jul 13, 2012 5:44:03 PM

To the original poster. Your mileage "might" go up. It would completely depend on how you drove the car. If you drove with economy as your goal, the tuneup could potentially raise your fuel economy.
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kxy4fw
Champion Author Denver

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Message Posted: Jul 13, 2012 9:17:26 AM

yes
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bithehr
Champion Author Atlanta

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Message Posted: Jul 13, 2012 8:32:11 AM

yes
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tattoo666TX
Champion Author Texas

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Message Posted: Jul 12, 2012 11:36:01 PM

Maybe. Maybe not. All depends on if the car really needs it or not, and if the car is capable of that kind of mileage.
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PCollen
Sophomore Author Florida

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Message Posted: Jul 2, 2012 10:31:08 AM

Can't be determined....if you're now getting 25 - 29 mpg, then perhaps. If you're driving a 62 Cadillac, and getting 10-15 mpg, unlikey. If your car hasn't had a tune up in years, then it will probably make SOME difference.
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cookieluver
Veteran Author Arkansas

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Message Posted: Jul 2, 2012 10:17:07 AM

Yes cause my car was missing. Now i hope it start getting better gas mileage.
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kxy4fw
Champion Author Denver

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Message Posted: Jul 2, 2012 9:46:37 AM

a little
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TheRavenHeart
Veteran Author Chattanooga

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Message Posted: Jul 2, 2012 9:31:50 AM

It depends...does your car currently run like a top, or does it misfire on one or more cylinders? From my personal experience, misfiring is easier to detect on a 6 cylinder than it is a 4 cylinder engine. In any case, doing it too often will just waste money, but not doing it often enough is also a waste of money. Check your owner's manual, that is usually the best source for info on maintenance schedules.
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coughlin
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Message Posted: Jun 22, 2012 8:57:06 PM

Yes.
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carinthuist
Champion Author San Francisco

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Message Posted: Jun 22, 2012 7:58:05 PM

Yes
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Vin63
Champion Author San Bernardino

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Message Posted: Jun 22, 2012 10:14:02 AM

A tune up is supposed to help maintain the vehicle's designed efficiency...not increase it.
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OilerFan
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Message Posted: Jun 22, 2012 7:28:25 AM

In the past, tuneups worked for me, but it was mainly because the vehicle was in bad need of a tuneup. If a car doesn't need it, I'm not sure getting a tuneup would show that much of a change to notice.
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kxy4fw
Champion Author Denver

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Message Posted: Jun 22, 2012 6:26:38 AM

I believe so
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W707
Champion Author Pennsylvania

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Message Posted: Jun 22, 2012 3:17:18 AM

yes tune-ups do help
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cmmattia
Champion Author Long Island

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Message Posted: Jun 21, 2012 9:48:07 PM

i am no mechanic, but i would have to say yes !!!
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JimBlake56
Veteran Author Akron

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Message Posted: Jun 21, 2012 12:33:22 PM

Houckster & Hotrod already said it.

Dirty filters, fouled sparkplugs, any of that can give your car poor MPG. So if that's the case YES it'll improve.

Replacing clean filters and changing sparkplugs too early is just a waste of money because the stuff you're throwing away isn't "used up".
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Houckster
Champion Author Atlanta

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Message Posted: Jun 13, 2012 8:37:25 AM

It can't hurt? If you spend money needlessly that hurts! A tune-up is not advisable unless there are drivability issues such as poor mileage or a CEL.
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the1roadhog
Champion Author Atlanta

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Message Posted: Jun 13, 2012 8:16:27 AM

It can't hurt.
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BlueberryFocus
All-Star Author Rochester

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Message Posted: Jun 12, 2012 8:48:05 PM

yes, a healthy car needs less fuel.
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cpcaviness
Rookie Author Phoenix

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Message Posted: Jun 12, 2012 5:26:09 PM

Yes tune ups generally help with fuel efficiency.
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jodybull
All-Star Author El Paso

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Message Posted: Jun 12, 2012 2:56:05 PM

I agree with HotRod 10. Very logical and sensible!
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HotRod10
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Message Posted: Jun 12, 2012 12:45:49 PM

Like Houckster said, it depends on what mileage it was getting in the past. If you were getting 31mpg a year ago and getting 27 now, I would say you should be able to get it back to 31, but if it's never gotten better than 29, you're unlikely to improve on that.
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Minges
Veteran Author Ohio

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Message Posted: Jun 8, 2012 7:43:02 PM

Yes
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Houckster
Champion Author Atlanta

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Message Posted: Jun 8, 2012 2:59:18 PM

A tune-up will restore LOST mileage due to things like spark plugs wearing out but if they're doing their job OK you will not get ANY mileage increase over what the car delivered when it was new.

[Edited by: Houckster at 6/8/2012 3:00:48 PM EST]
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vikings80
All-Star Author South Dakota

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Message Posted: Jun 8, 2012 9:14:14 AM

yes
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grunt88
Rookie Author Florida

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Message Posted: May 7, 2012 11:30:19 PM

yes
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jorobins538
Champion Author Chicago

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Message Posted: Apr 23, 2012 2:34:15 PM

probably couldn't hurt - but you don't have to do it every year like we used to
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Titanic1985
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Message Posted: Apr 22, 2012 10:00:00 PM

Hello lookupthesky. GB responses have fairly well covered the subject. I however have a questions which would put more relevance to your question. What is the year, make and model of your vehicle? How many cylinders does it have? How many miles are on it? Have some "tune-up" items such as replacing the Air Filter (a big waste of gas if filthy) been done on an as needed basis rather than a scheduled one based on time or mileage? I live on dirt roads and the maintenance schedule does not entirely apply to my usage. Do you drive in heavy traffic?

What I'm getting at is yes, tune-ups do improve fuel efficiency, but by how much is what is in question.

By the way, oil and oil filter changes and flushing of the radiator are considered routine maintenance rather than components of a tune-up.
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