Gasoline MPG ...

[cwmoser]

Is this typical for a stock "mall cruiser" 2002 LX470 ... I average mostly around 13 to 14 MPG typically when I drive some stop and go driving mostly below 45mph. When on a long trip on the Interstate Highway I get mostly 15 to almost 16 MPG.

Wondering if replacing the upstream O2 sensors would help. My LX470 has only 77K miles on it.

 

[rexington14]

City MPG seems about right (it sucks)

Highway seems a bit low, although on an 02 you only have the 4 speed. On my 05 with the 5 speed I can easily get 17-19 (always cruising under 75mph, with gentle passing)

 

[OEMGUY0720]

Do you have an OBD tool that has AF (upstream) and O2 (downstream) voltage readout? That’s where I would start to see if they are faulty, reading between the two side/bank should be close by decimal.

 

[Trunk Monkey]

If you search "mpg", titles only, 100 section only, literally dozens of threads.

 

[Live to Ski]

all your readings are in the zone of reality. accept the sh&ty gas mileage and drive on.

 

[nissanh]

Those are GREAT numbers! 15 to 16 highway and 12-14 in the city are fantastic for this old V8's with 4 speeds that is 100% All-Wheel-Drive.

 

[jademica100]

I just installed the scan gauge 2 unit on my 2000 LC and it give me real time MPG readings. Averaged 15-17 non-stop start when driving but the MPG went down to 2-8 when accelerating hard or going uphill.

Pretty cool device that plugs into the ob11 port if you 100 series doesnt have computer in dash that gives that info.

 

[SteveH]

My '99 has 345K and gets 13-14 in town - often 14.6. I have gotten 18+ on two highway trips that were in rural Colorado, so not super high speed driving. I get 17 on the highway a higher speeds.

I'm very happy with the mileage I get on this fat pig of a truck, versus that of my FJ62 (12 mpg most of the time), and EFI FJ40 (10 mpg all the time).

 

[97 AZ LC]

My 98 four speed consistently gets 19+ on the highway - never gotten 20 try as I might. I don't think I've ever had a tank of city only driving. 1998s are pretty lightweight by comparison to later years and my 98 is especially svelte. On the EPA test the 2003 five speed added 1 mpg to the 2002 highway number, no change to the city number.

 

[2000UZJ]

Well, I'm at 7.0MPG with a good chunk of weight and 35's....I also only do city roads in this thing...it sucks. I've been chasing this MPG issue for years at this point.

 

[excessive]

My 98 four speed consistently gets 19+ on the highway - never gotten 20 try as I might. I don't think I've ever had a tank of city only driving. 1998s are pretty lightweight by comparison to later years and my 98 is especially svelte. On the EPA test the 2003 five speed added 1 mpg to the 2002 highway number, no change to the city number.

what makes the 98 lighter than other 100 series ? it surely can't just be the front diff ?

 

[PyroZuki]

'98 UZJ100 4 speed and it gets the same fuel mileage as cwmoser. I used to have an '06 GX470, which got much better mileage and also felt like it had a lot more power than the UZJ (some sites claim JDM models only got 232 HP, others say 260 HP).

Pyro

 

[x8o8drifter]

'98 UZJ100 4 speed and it gets the same fuel mileage as cwmoser. I used to have an '06 GX470, which got much better mileage and also felt like it had a lot more power than the UZJ (some sites claim JDM models only got 232 HP, others say 260 HP).
View attachment 4028854


Pyro

VVT-i and non VVT-i. (supposedly)
A JDM and AUS engine both made around 230. (232 for JDM and 228 for AUS, well within the error area of a dyno.)
Both were non VVT-i.

 

[PyroZuki]

VVT-i and non VVT-i. (supposedly)
A JDM and AUS engine both made around 230. (232 for JDM and 228 for AUS, well within the error area of a dyno.)
Both were non VVT-i.

Yes, the VVT-i made a big difference.

Pyro

 

[ScotyDosentKnow]

Sounds about right to me. I have an 05 with 33's, sliders and an ARB bumper. Getting 9-12mpg in town and 13-16mpg on the highway (my wife is 9/13 and im 12/16 lol) but I remamber the numbers being pretty close to what you posted when it was stock.

Check tire pressure, if low this can make a big difference. I would do basic tune up items as well (air filter, spark plugs, O2 sensor)

 

[97 AZ LC]

what makes the 98 lighter than other 100 series ? it surely can't just be the front diff ?

Just lots of little stuff probably, about 200 pounds from 1998 to 2007. The 4 pinion front diff added only 12 oz. by my calculations but the addition of the A-trac weight is what causes 4 pinion diffs to fail at an alarming rate.

 

[Kofoed]

My 99 had the sales sheet in it, EPA rating 13-16 mpg. I can get 16. A light foot makes a difference, and once you go above 70, it really drops off.