GS 300 real world mpg

[eleveneleven]

Hey all.

Apologies if this has been covered before just wondering what the mpg is on the 2nd gen GS300's 

Currently drive an IS250 and seriously considering a 300, driving is a mixture of short 1  to 3 mile trips with a some longer 30+ mile motorway runs twice or 3 times a week. 

I know its going to cost more overall to run just wondering how much more. if I have some rough mpg figures maybe I could justify it with some man maths 😄 

Thanks in advance.  

[rich1068]

Justify it with man maths. I'd love to be able to tell you what I got out of my GS300 but I tried not to think about it. I just concentrated on enjoying it 

[Las Palmas]

The bigger the engine the more fuel.

Going from 2½L to 3L?

Your fuel consumption now divided by 5 and then multiplied by 6. Could be more or less correct with same driving style. Weight of car mean something too.

[ColinBarber]

Older engine design with a larger capacity and a heavier car. I'd say 15 to 20% more fuel than an IS250. I seem to recall getting about 28 mpg average in my 1998 GS300.

The series III GS300 (2005+) is better, but would still be around 10% worse compared to the IS250.

[rich1068]

13 hours ago, ColinBarber said:

I seem to recall getting about 28 mpg average in my 1998 GS300.

I don't think I even got that. My daily driving is very similar to the OP's.

I do remember though it improved considerably during the first lock down. Still working and empty roads. Christmas Day traffic every day.

[ColinBarber]

5 hours ago, rich1068 said:

I don't think I even got that. My daily driving is very similar to the OP's.

Quite possibly. I cannot entirely remember. I do know that when I changed to a GS430 I averaged 23 mpg which was worse than the 300.

[Prince Bob]

On 11/17/2022 at 2:44 PM, eleveneleven said:

Hey all.

Apologies if this has been covered before just wondering what the mpg is on the 2nd gen GS300's 

Currently drive an IS250 and seriously considering a 300, driving is a mixture of short 1  to 3 mile trips with a some longer 30+ mile motorway runs twice or 3 times a week. 

I know its going to cost more overall to run just wondering how much more. if I have some rough mpg figures maybe I could justify it with some man maths 😄 

Thanks in advance.  

I used to get around 20 in town, and up to 38 on motorway. Making progress on motorway 32. Regularly did over 450 miles to a tank

[royoftherovers]

3 hours ago, Prince Bob said:

I used to get around 20 in town, and up to 38 on motorway. Making progress on motorway 32. Regularly did over 450 miles to a tank

Excellent Robert.

I have only achieved 499.9 (twice). It is  a V6 3.5 litre.

[JeffL]

I get about 24mpg local driving and about 34mpg long distance.

[TigerFish]

From what I recall (and it was a long time ago now) my gen2 used average mid twenties, with low to mid thirties on a steady run.