Just planing to buy a XJ8 1999 brand of Jaguar and want to be sure it's a good car in terms of general maintenance and gas consumption in particular

Get it on a high level, pro grade scan tool and check long term and short term fuel trim.

Make sure all the tires are correctly inflated, no brakes binding and drive light footed.

https://www.google.com/search?q=daf+cf+85+heavy+fuel+consumption

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IN order to improve fuel consumption you must make the engine run more efficiently. here are the most important ways.
typical maintenance. (check the manual)

1. check air in tires
2. oil and oil filter change
3. spark plugs change (TUNE UP)
4. air filter change


you personally can do most of these things. go to local walmart and get most of these items. very easy.

good luck.

Toyota : European and American versions of the interior is good , fine , so humane. Fuel consumption and Volkswagen, Ford models almost Japanese engine technology compared to Europe and there is no advantage , because the car is lighter fuel , security aspects more than the domestic version of the strong. In the United States is taking the low -selling line, after all, the United States has GM, Ford put in that the two brands . U.S. oil prices coupled with cheaper , generally a car, the first one is an American car , that\'s a slight exaggeration to buy a bottle of mineral water will drive pickups go . General economic conditions, poor students and blacks will buy Toyota and other Japanese cars . The Japanese are good at sales, so the taxi also appeared partly in Toyota car.

Ford : Americas penetration is high, the U.S. police cars, taxis , pickups , etc. but also with Ford brand recognition is very high. Many models are Ford\'s global synchronization sales. Americans are more pro-gaze Ford car . Ford had acquired Volvo, Land Rover , Jaguar , Aston Martin , Lincoln , Mercury and other brands. Ford\'s advantage is built SUVs and pickups. Many high-end SUV are imported Ford and Volvo , Land Rover , Jaguar same platform , security is very high. World-class R & D engine , 1.0T for this procurement is Germany \'s SMART. You buy in the U.S., and other aspects of quality is better than homemade , cheap maintenance.

source : obd2 tool car diagnostic

• Drain the gas and after you drain the gas let it dry for a day and then buy a new gas and replace the fuel filter also to avoid moist from the water.
• Also make sure check the hose of the fuel make sure there are no leaks.
  

I’m happy to assist further over the phone at https://www.6ya.com/expert/ramy_d9e7ebea3891f482

its a matter of opinion. they both have good service records. i prefer gas though.

I recommend that you sign up for a subscription to ALLDATA online, you can find links to do this through autozone. ALL DATA has all the repair, body, management online accounts you need for timing reference marks, firing orders, suspension repairs, air conditioning etc.Use your laptop with a wireless internet connection, then the computer is all you need beside actual tools of course.

here is one site that has reviews on that car.... i've started you on the page of recalls.... confirm first that all the issues in the recall list have been taken care of for that vehicle

http://www.autobuyguide.com/2000/12-aut/jaguar/s-type/recalls/index.html

Please take a moment to rate this solution thanks

the lancer get's about 23-26 miles per gallon it is a low maintenance vehicle and as long as you change the oil and do regular maintenance on it the vehicl will last a long time... please rate this

My Answer:

Poor gas mileage can be a result of many many things.

First of all you need to find out what is the factory normal gas mileage for your model year Jeep SUV. It should have said on your window sticker if you bought it brand new. If you are a 2nd or 3rd owner then a Jeep dealer would have info. Google search will tell you as well, and only takes a couple minutes to find.

I did a quick Google search and for a 2003 Jeep Grand Cherokee with a (4.7L V8 engine) the average mileage is roughly 14 mpg.

Not sure what engine you have as to options, etc?

How you drive will greatly change that number up or down depending on a number of driving and driver variables.

A few being -

Driving habits?

Tire pressures?

Engine tuned up?

Lube & oil/filter changes (every 5,000-7,500 miles? Air filter changes (every 10,000-15,000 miles)? Read your auto manual for exact recommended intervals.

How many people in the SUV on average?

Are you towing anything?

Type gas you are burning - BRAND? (See injectors below)

Area you are driving in (hills and valleys verses flat out,
etc)

Jeeps in general don't have a good track record for great mileage, and rough engine idling is always a clue that your fuel injectors are dirty. Typical on all Jeeps with port fuel injection systems! On Jeeps with dirty fuel injectors your mileage will go way down accordingly. If your not putting at least a 12 oz bottle of say Walmart brand Super Tech Fuel Injector Cleaner (~ $1 each) in your gas tank religiously every logged 1000 miles, or every 2 tank fill ups, then you are just inviting dirty fuel injectors and POOR fuel economy!

My 1993 Ford XPLR with a 4L V-6 engine (and ~ 160,000 flawless driven miles) gets roughly 22 miles per gallon on the highway with cruise control on, and about 17 around town on average. I religiously put a 12 oz bottle of the above injector cleaner in my gas tank every 1000 miles!! Of course I do all my own tune-ups, general repairs, and suspension maintenance (shocks, O2 sensors, trans oil changes, lube & oil/filter changes, code reading and clearing, etc) myself and it shows! I don't trust repair shops except for say Tires and Balancing at SEARS.

Hope that helps ease your mind about gas mileage as it relates to your Jeep there.

Frank