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-   -   Average MPG for GS400 (http://www.clublexus.com/forums/gs-second-generation/445971-average-mpg-for-gs400.html)

beaterKU 08-10-09 02:38 PM

Average MPG for GS400
 
Hey guys,

I recently switched over to Amsoil in my GS400. I switched because we started using it in our industrial gear boxes. Right off the the bat I noticed that my mileage jumped to around 22-23mpg. The only mods I have are a K&N drop in and a Carson exhaust. On a recent road trip I got around 24mpg cruising at 75mph. I am going to run a bottle of Amsoil PI through and see if that will help any more. I have always though it got really good mileage considering the sticker says 19mpg on the highway. My daily driving consists of 50/50 highway/city.

What are you guys getting mileage wise?

vwynn 08-10-09 04:32 PM

i get 20-21. hitting boost at least once a day.

GS4_Fiend 08-10-09 09:51 PM

Car is stock. Only use Chevron, no fuel additives. 80% Highway, 20% City. MPG 20-23.

GCOP 08-10-09 11:19 PM

17 in the city, 23-24 on the highway.

LEXUS_KID 08-11-09 08:35 AM

18-22 depends on how I hit the :driving:

McKrevice 08-11-09 06:00 PM

I get about 20 combined...but got damn near 30 driving my car back to Mn from Pa.

2000GS4

Rock-a-Lex 08-12-09 05:27 AM

15-16 around town and around 20-21 on the highway. My mods are killing my mpg. ;(

99Aristo 08-12-09 10:49 AM

gas mileage? lol.....I don't even bother to check anymore...hurts my feelings too much every time I put gas in it. ;) I do know however I can get from North Phoenix to Las Vegas on 3/4 tank....about 12 gallons...at good cruising speeds of 70-75 mph.

5t341th 08-12-09 12:40 PM

Wow i only average like 20mpg driving my GS300!
sounds like its time for a tuneup

Infamous 1 08-12-09 01:11 PM

Quote:

Originally Posted by 5t341th (Post 4759345)
Wow i only average like 20mpg driving my GS300!
sounds like its time for a tuneup

They say that the gas mileage is almost identical. Don't feel bad, i want to get a 400/430 myself but i have too much money invested in my 300.

Rock-a-Lex 08-12-09 01:31 PM

Quote:

Originally Posted by Infamous 1 (Post 4759449)
They say that the gas mileage is almost identical. Don't feel bad, i want to get a 400/430 myself but i have too much money invested in my 300.

You should still do it IMHO. All your parts can be transferred easily to the GS4. It's just that it would be a PITA especially if you didn't bother to keep your stock parts.

marshun 08-12-09 02:01 PM

no power mods on the gs400 here and i use amsoil as well. amsoil is in everything on the car and we get about 23-24mpg. but the wife has a lead foot so when she drives the car all week we get like 17mpg.

HI98GS 08-12-09 02:09 PM

I'm envious of the mileage you all are getting. I am at HALF the mileage of most of you. I don't have a heavy foot, yes the car is tuned, and yet my mileage sucks eggs. Oh well, at least if I run out of gas and I'm on the side of the road, when someone helps me out, they can look at the pretty engine that's fuel starved!!

werewolf 08-12-09 02:24 PM

20 combined. Normal driving

iGOTlexy 08-12-09 03:45 PM

20 more or less


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