Question about 2000 Subaru Outback

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**** fuel economy

Hey guys i really need a hand i have a 2002 liberty rx 2.5 the car is suffering poor fuel economy tyres/preassure are good running 98 ron also fully synthetic oil just had trottle body cleaned. have run injector cleaner through full tank of petrol. reguly serviced. any idears? car a little bit sluggish as well. am acheiving 10/100 freeway driving and 13l/100 round town i do not thrash car used to get much better performance

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Replace the plug wires and plugs and inspect the old parts for cracks and corrosion(wires) and carbon deposits(plugs). Inspecting the air filter (replace if necessary) and replacing the fuel filter may help also.

Posted on Apr 27, 2010

  • Nathan Robinson Aug 20, 2011

    i have the same engine in a liberty and have the same problem, even after a 100000km major service. have you changed the tyre size?

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Posted on Jan 02, 2017

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Are my Mickey Thompson Baja ATZ P3 tyres likely to cause poor fuel economy (14L/100km)in my 2015 BT50 Freestyle cab ute or is there a more fundamental problem?


I am not familiar with either the tyres or your vehicle.

Some tyres do have a greater rolling resistance and cause the vehicle to use a little more fuel. Suspension and steering misalignment wastes a great deal more fuel as does a binding brake or incorrect tyre pressures - some tyres need a great deal more pressure than those recommended for standard fitments.

A small amount of additional toe-in or toe-out can waste a deal of fuel due to the fact the vehicle is effectively pushing the tyre sideways several feet each mile and the more grippy a tyre is the more effort is needed to push it sideways.

It is worth knowing the stock toe-in or toe-out figure applies only when the camber angles are correct. The toe figure has a direct relationship to the camber angle and when the camber angles are unequal no toe figure will be correct.

Oct 10, 2017 | Cars & Trucks

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Improve Your Car?s Fuel Efficiency


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Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} It’s really exasperating to see fuel prices skyrocketing, right? We can only feel helpless in the face of recurring and economy-driven price fluctuations. Seeking measures to improve fuel economy is the only way to combat rising fuel prices. Do not disregard these simple guidelines; each little step can really start adding up to significant savings to your budget.

Check Tyre Pressure

Keeping the tyres well inflated is one of the simplest things you can do to help improve your car’s fuel efficiency. You can improve the mileage by about 3.3 percent if you keep your tyres inflated properly, according to the DOE.

Lighten Your Load

Empty out your boot of unnecessary items. For every extra 45 kg you carry, your fuel efficiency can drop by 1-2% in a typical vehicle.

S-L-O-W D-O-W-N

The faster you drive, the more fuel you use. Driving within the speed limit recommended by the manufacturer helps save fuel. Driving just 5mph over the speed limit can affect fuel economy by up to 23%. Likewise, quick acceleration consumes too much fuel; accelerate slowly and gradually.

Do Fuel Quality/Types/Additives Help Mileage?

Petrol pump attendants often try to convince you to go for ‘Speed petrol’ or ‘X-tra Mile diesel’. But this need not necessarily help improve your vehicle’s fuel efficiency. Always use the grade recommended for the vehicle by the manufacturer. Higher octane fuel may not only be a waste of money but may harm the vehicle, as well. However sticking to one brand of fuel is always good for the engine. Know more about Octane Ratings

Tune Your Engine

A well-tuned engine can improve fuel economy by up to 4%. So change your oil and follow your car manufacturer’s recommendation on servicing.

Clean the Air Filters Regularly

Air filters keep impurities from damaging your engine. Replacing a clogged air filter can improve fuel economy by as much as 10%.

Keep the Windows Closed

Driving with your windows open considerably reduces mileage, far more than keeping the AC on while driving along highways. So preferably keep the windows closed and the AC on if you want to keep cool. Of course the air-conditioning decreases fuel efficiency considerably, so use it judiciously. Windows down or A/C on — which is more fuel-efficient?

Clean Spark Plugs

Ensure your spark plugs are in good condition. Renew the plugs and wires at intervals specified by the manufacturer. This will keep all cylinders firing properly resulting in higher efficiency.

Don’t Be a Clutch-Driver

Never keep your foot on the clutch while driving. When you do this, pressure is being placed on your clutch, and it not only reduces mileage, but also wears out the clutch plate, replacing which is not cheap.

Keep the Car in Showroom Condition

It’s always prudent to keep the car in the showroom condition. Remember that any modification to the car, such as broad tyres, diffusers etc., will adversely affect the mileage.

on Sep 11, 2010 | Honda Accord Cars & Trucks

1 Answer

I have a 2001 park ave that burns too much gas.I had it tuned up and it still drink too much gas.How can this be fixed


run the fault codes and find what sensors are affecting the consumption
tune ups are not necessary and only cost money as the ECM is continually tuning the engine every second of operation
If it cannot keep the engine in tune it will set a fault code for you to fix
next you will have to have realistic expectations for the economy that you expect to get
There are many things that need checking like brake drag, tyre pressures , wide tyres, bigger tyres, your driving habits, if over drive is operational, dirty air filters , worn engine, blocked cat converter, load and speed, city or country driving ,lots of hills , faulty injectors , low fuel pressure, incorrect exhaust system
The list goes on and any one or a combination of some will give poor economy.

May 23, 2015 | 2001 Buick Park Avenue

2 Answers

I owned 1300 cc belta car , the fuel consumption rate is 8.5 km/l in urban setting . Is it normal consumption rate? I think it a little high rate for 1300 cc


commenting on fuel consumption is like asking "how long should a piece of string be?". The variables to be considered are tyre pressures, size of tyres, width of tyres,tread patterns,wheel alignment, loads carried by the vehicle, climate temperature and conditions, driving techniques,traffic conditions, speeds travelled, use of gears to maintain correct torque range from the engine, electrical loads required from the alternator and terrain conditions
Some of the things that you can do to improve fuel economy include selecting neutral when stopped as this reduces the load on the engine at idle and the fuel setting is less, having your foot on the clutch loads up the thrust bearings on the crankshaft. An automatic is always trying to drive when stopped so by placing it in neutral when stationary allows the engine to idle at a lower fuel setting. run on standard size tyres and increase the air pressure around 4psi make for less rolling resistance from the tyres so the economy will be improved. Carrying as little as is necessary, (That includes driver and passenger weights) reduces the load on the engine--more economy.Using a cruise control were possible or reading the traffic conditions so that vast speed changes are required less so will improve economy. experiment with different octane rated fuels ( be wary of e-fuels) While you may be reading manufacturers sales rubbish about the expect fuel consumption of a particular vehicle remember that it is sales talk as economy is heavily dependant on engine/vehicle design and driver technique. Basically there is no one single thing to consider for fuel economy but ultimately it all comes down to the driver.

Dec 03, 2014 | Cars & Trucks

1 Answer

2002 Mercedes C320 very poor fuel economy ~8 mpg, no engine codes or faults present


Lead foot, tire pressures, stop /go driving. AC/poor compression, Trunk full of sandbags, transmission slipping, Wheel bearing friction, Brake shoe always on, etc.

Sep 08, 2017 | 2002 Mercedes-Benz C-Class

1 Answer

2002 Mercedes C320 very poor fuel economy ~8 mpg, no engine codes or faults present


I'm not sure what the problem is specifically, but I can assure you this--you're basically throwing money way (and possibly exacerbating the issue) by using 93 octane fuel. Your car is timed and tuned to run most economically and with best performance with 87 octane fuel. The higher the octane, the slower the fuel burns. Longer burn time can equate to more power, but ONLY if your engine is designed and tuned for this application.
Couple of suggestions..checkto make sure your exhaust is "free". A plugged catalytic converter can really rob mileage. Tire pressure and air filter are worth mentioning as well.

Jan 01, 2013 | 2002 Mercedes-Benz C-Class

1 Answer

Fuel contamination


You likely got a load of water contaminated fuel, diesel fuel absorbs water like a sponge. Drain the fuel or add a water absorbing diesel fuel additive available from many parts stores.

Nov 01, 2012 | Cars & Trucks

1 Answer

Poor fuel economy


use higher grade gas

Aug 18, 2012 | 2002 Buick LeSabre

2 Answers

What is the fuel consumption for a toyota spacio model 1998?


There are a few websites that have the official fuel consumption information for a new vehicle. Just google "1998 toyota spacio specs" and you can look it up.

The consumption you will achieve on one of these cars (now 12 years old with lots of miles driven) depends upon:
1. how they are driven; and
2. how they are mechanically maintained; and
3. running sufficiently high tyre pressures to minimise rolling resistance; and
4. the octane rating of fuel used and whether or not it is an ethanol blended fuel.(You will need to consume more fuel for the same distance traveled if using an ethanol blended versus a straight non-ethanol fuel).

A poorly maintained vehicle will usually give poor fuel economy as will one that is driven hard.

Jan 15, 2011 | Toyota Corolla Cars & Trucks

2 Answers

My 95 intrepid is really hard on fuel


temp sensors, lambda/oxygen sensor/ reading wrong temp - they would both increasse fuel consumption - have the diagnostics checked at garage.
Air filter, it it clogged or really dirty?
Tyre pressures - make sure they are upto reccomended pressure, (extra pressure reduces rolling resistance and increases fuel economy but at the cost of grip...)
Binding brakes?
Fuel Leak?

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Jan 21, 2010 | 1995 Dodge Intrepid

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