Gas Mileage on 1999 RX 300

Sure, 99-01 or so have Shift Solenoid E and maybe other problems.
These aren't the best transmissions and that could be one of the
problems. The others are to make sure the engine is well tuned (for
example, valve clearances, timing belt, oxygen sensors, spark plugs --
use NGK Iridiums). 16MPG in all-city driving is OK, but if you can
only get 16 MPG with highway driving then it's really bad.



On Jun 30, 5:57 am, ak....DeleteThis@att.net wrote:
> My 1999 RX 300 has a very poor gas mileage, the best I get is 16 MPG,
> I have a mechanic look at it and they replaced the spark plugs, Tune-
> up, fuel injection cleaning and throttle body cleaning, it didn't help
> much, I took it back and they don't know what else to do to get better
> gas mileage, my wife tells me that it runs litle heavy specially when
> you turn the car, I didn't feel it, someone told me 99 has
> transmission issues and that might be a problem. I am at lost now,
> please help.
>
> Abid
 >> Stay informed about: Gas Mileage on 1999 RX 300 

<akhan RemoveThis @att.net> wrote in message
news:eecb41ea-eeba-4bbe-b2fc-cb54920fa503@m44g2000hsc.googlegroups.com...
> My 1999 RX 300 has a very poor gas mileage, the best I get is 16 MPG,
> I have a mechanic look at it and they replaced the spark plugs, Tune-
> up, fuel injection cleaning and throttle body cleaning, it didn't help
> much, I took it back and they don't know what else to do to get better
> gas mileage, my wife tells me that it runs litle heavy specially when
> you turn the car, I didn't feel it, someone told me 99 has
> transmission issues and that might be a problem. I am at lost now,
> please help.
>
> Abid

What kind of spark plugs were installed?

How many miles on the odometer? It your RX front or all wheel drive?

What type of driving is the vehicle used for? If it is used primarily for
very short trips, the engine will not warm up sufficiently to go into closed
loop operation.

What are the typical driving conditions? City? Highway? Stop-and-go?
What is the terrain like? Are the roads hilly?

What kind of cargo and passengers are typically in the vehicle?

When was the transmission fluid changed and what is the condition of the
automatic transmission fluid?

What pressure are the tires inflated to?
--

Ray O
(correct punctuation to reply)
 >> Stay informed about: Gas Mileage on 1999 RX 300 

On Jun 30, 9:17 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
> <ak... RemoveThis @att.net> wrote in message
>
> news:eecb41ea-eeba-4bbe-b2fc-cb54920fa503@m44g2000hsc.googlegroups.com...
>
> > My 1999 RX 300 has a very poor gas mileage, the best I get is 16 MPG,
> > I have a mechanic look at it and they replaced the spark plugs, Tune-
> > up, fuel injection cleaning and throttle body cleaning, it didn't help
> > much, I took it back and they don't know what else to do to get better
> > gas mileage, my wife tells me that it runs litle heavy specially when
> > you turn the car, I didn't feel it, someone told me 99 has
> > transmission issues and that might be a problem. I am at lost now,
> > please help.
>
> > Abid
>
> What kind of spark plugs were installed?
>
> How many miles on the odometer?  It your RX front or all wheel drive?
>
> What type of driving is the vehicle used for?  If it is used primarily for
> very short trips, the engine will not warm up sufficiently to go into closed
> loop operation.
>
> What are the typical driving conditions?  City?  Highway?  Stop-and-go?
> What is the terrain like?  Are the roads hilly?
>
> What kind of cargo and passengers are typically in the vehicle?
>
> When was the transmission fluid changed and what is the condition of the
> automatic transmission fluid?
>
> What pressure are the tires inflated to?
> --
>
> Ray O
> (correct punctuation to reply)

Thanks Ray, odometer reading is 104,000, front wheel drive, mostly
city driving in Houston, TX, short trips, no hills, mostly no cargo,
wife and two kids or all four of us, ATF looks clean but I have no
idea when it was changed, I check the pressure and now it is 32 on all
4 tires, coupld of them were low 27/28.

Abid
 >> Stay informed about: Gas Mileage on 1999 RX 300 

On Jun 30, 10:36 pm, johngd....RemoveThis@hotmail.com wrote:
> Sure, 99-01 or so have Shift Solenoid E and maybe other problems.
> These aren't the best transmissions and that could be one of the
> problems. The others are to make sure the engine is well tuned (for
> example, valve clearances, timing belt, oxygen sensors, spark plugs --
> use NGK Iridiums). 16MPG in all-city driving is OK, but if you can
> only get 16 MPG with highway driving then it's really bad.
>
> On Jun 30, 5:57 am, ak....RemoveThis@att.net wrote:
>
>
>
> > My 1999 RX 300 has a very poor gas mileage, the best I get is 16 MPG,
> > I have a mechanic look at it and they replaced the spark plugs, Tune-
> > up, fuel injection cleaning and throttle body cleaning, it didn't help
> > much, I took it back and they don't know what else to do to get better
> > gas mileage, my wife tells me that it runs litle heavy specially when
> > you turn the car, I didn't feel it, someone told me 99 has
> > transmission issues and that might be a problem. I am at lost now,
> > please help.
>
> > Abid- Hide quoted text -
>
> - Show quoted text -

I am not sure what kind of spark plugs are in it, I will check, mostly
city driving, stop and go kind, I guess it will worth while taking a
trip to see what I get on the highway, may be a good reason to get out
over the July 4th weekend.

Abid
 >> Stay informed about: Gas Mileage on 1999 RX 300 

<akhan.TakeThisOut@att.net> wrote in message
news:065e6905-e508-495d-ba7a-52e72baa9058@e39g2000hsf.googlegroups.com...
On Jun 30, 9:17 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
> <ak....TakeThisOut@att.net> wrote in message
>
> news:eecb41ea-eeba-4bbe-b2fc-cb54920fa503@m44g2000hsc.googlegroups.com...
>
> > My 1999 RX 300 has a very poor gas mileage, the best I get is 16 MPG,
> > I have a mechanic look at it and they replaced the spark plugs, Tune-
> > up, fuel injection cleaning and throttle body cleaning, it didn't help
> > much, I took it back and they don't know what else to do to get better
> > gas mileage, my wife tells me that it runs litle heavy specially when
> > you turn the car, I didn't feel it, someone told me 99 has
> > transmission issues and that might be a problem. I am at lost now,
> > please help.
>
> > Abid
>
> What kind of spark plugs were installed?
>
> How many miles on the odometer? It your RX front or all wheel drive?
>
> What type of driving is the vehicle used for? If it is used primarily for
> very short trips, the engine will not warm up sufficiently to go into
> closed
> loop operation.
>
> What are the typical driving conditions? City? Highway? Stop-and-go?
> What is the terrain like? Are the roads hilly?
>
> What kind of cargo and passengers are typically in the vehicle?
>
> When was the transmission fluid changed and what is the condition of the
> automatic transmission fluid?
>
> What pressure are the tires inflated to?
> --
>
> Ray O
> (correct punctuation to reply)

Thanks Ray, odometer reading is 104,000, front wheel drive, mostly
city driving in Houston, TX, short trips, no hills, mostly no cargo,
wife and two kids or all four of us, ATF looks clean but I have no
idea when it was changed, I check the pressure and now it is 32 on all
4 tires, coupld of them were low 27/28.

Abid

***********
Abid,

I think that the mostly short trips, and perhaps a heavy foot, are causing
the relatively poor fuel economy, although according to this EPA web site:
http://www.fueleconomy.gov/feg/bymodel/1999_Lexus_RX_300.shtml

The 1999 RX 300's fuel economy ratings using the new revised (more
realistic) fuel economy estimates are 17 city, 22 highway, so 16 in the city
for mostly short trips is not all that bad.

I would inflate the tires to 35 or 36 PSI cold to improve tire life and fuel
economy.
--

Ray O
(correct punctuation to reply)
 >> Stay informed about: Gas Mileage on 1999 RX 300 

On Jul 1, 10:49 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
> <ak....TakeThisOut@att.net> wrote in message
>
> news:065e6905-e508-495d-ba7a-52e72baa9058@e39g2000hsf.googlegroups.com...
> On Jun 30, 9:17 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
>
>
>
>
>
> > <ak....TakeThisOut@att.net> wrote in message
>
> >news:eecb41ea-eeba-4bbe-b2fc-cb54920fa503@m44g2000hsc.googlegroups.com...
>
> > > My 1999 RX 300 has a very poor gas mileage, the best I get is 16 MPG,
> > > I have a mechanic look at it and they replaced the spark plugs, Tune-
> > > up, fuel injection cleaning and throttle body cleaning, it didn't help
> > > much, I took it back and they don't know what else to do to get better
> > > gas mileage, my wife tells me that it runs litle heavy specially when
> > > you turn the car, I didn't feel it, someone told me 99 has
> > > transmission issues and that might be a problem. I am at lost now,
> > > please help.
>
> > > Abid
>
> > What kind of spark plugs were installed?
>
> > How many miles on the odometer? It your RX front or all wheel drive?
>
> > What type of driving is the vehicle used for? If it is used primarily for
> > very short trips, the engine will not warm up sufficiently to go into
> > closed
> > loop operation.
>
> > What are the typical driving conditions? City? Highway? Stop-and-go?
> > What is the terrain like? Are the roads hilly?
>
> > What kind of cargo and passengers are typically in the vehicle?
>
> > When was the transmission fluid changed and what is the condition of the
> > automatic transmission fluid?
>
> > What pressure are the tires inflated to?
> > --
>
> > Ray O
> > (correct punctuation to reply)
>
> Thanks Ray, odometer reading is 104,000, front wheel drive, mostly
> city driving in Houston, TX, short trips,  no hills, mostly no cargo,
> wife and two kids or all four of us, ATF looks clean but I have no
> idea when it was changed, I check the pressure and now it is 32 on all
> 4 tires, coupld of them were low 27/28.
>
> Abid
>
> ***********
> Abid,
>
> I think that the mostly short trips, and perhaps a heavy foot, are causing
> the relatively poor fuel economy, although according to this EPA web site:http://www.fueleconomy.gov/feg/bymodel/1999_Lexus_RX_300.shtml
>
> The 1999 RX 300's fuel economy ratings using the new revised (more
> realistic) fuel economy estimates are 17 city, 22 highway, so 16 in the city
> for mostly short trips is not all that bad.
>
> I would inflate the tires to 35 or 36 PSI cold to improve tire life and fuel
> economy.
> --
>
> Ray O
> (correct punctuation to reply)- Hide quoted text -
>
> - Show quoted text -

Thanks Ray, The link really helps, I will inflate the tires to 35.

Abid
 >> Stay informed about: Gas Mileage on 1999 RX 300 

<akhan.DeleteThis@att.net> wrote in message
news:3f13b48b-f4ff-40ea-a40b-dd571432532e@d45g2000hsc.googlegroups.com...
On Jul 1, 10:49 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
> <ak....DeleteThis@att.net> wrote in message
>
> news:065e6905-e508-495d-ba7a-52e72baa9058@e39g2000hsf.googlegroups.com...
> On Jun 30, 9:17 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
>
>
>
>
>
> > <ak....DeleteThis@att.net> wrote in message
>
> >news:eecb41ea-eeba-4bbe-b2fc-cb54920fa503@m44g2000hsc.googlegroups.com...
>
> > > My 1999 RX 300 has a very poor gas mileage, the best I get is 16 MPG,
> > > I have a mechanic look at it and they replaced the spark plugs, Tune-
> > > up, fuel injection cleaning and throttle body cleaning, it didn't help
> > > much, I took it back and they don't know what else to do to get better
> > > gas mileage, my wife tells me that it runs litle heavy specially when
> > > you turn the car, I didn't feel it, someone told me 99 has
> > > transmission issues and that might be a problem. I am at lost now,
> > > please help.
>
> > > Abid
>
> > What kind of spark plugs were installed?
>
> > How many miles on the odometer? It your RX front or all wheel drive?
>
> > What type of driving is the vehicle used for? If it is used primarily
> > for
> > very short trips, the engine will not warm up sufficiently to go into
> > closed
> > loop operation.
>
> > What are the typical driving conditions? City? Highway? Stop-and-go?
> > What is the terrain like? Are the roads hilly?
>
> > What kind of cargo and passengers are typically in the vehicle?
>
> > When was the transmission fluid changed and what is the condition of the
> > automatic transmission fluid?
>
> > What pressure are the tires inflated to?
> > --
>
> > Ray O
> > (correct punctuation to reply)
>
> Thanks Ray, odometer reading is 104,000, front wheel drive, mostly
> city driving in Houston, TX, short trips, no hills, mostly no cargo,
> wife and two kids or all four of us, ATF looks clean but I have no
> idea when it was changed, I check the pressure and now it is 32 on all
> 4 tires, coupld of them were low 27/28.
>
> Abid
>
> ***********
> Abid,
>
> I think that the mostly short trips, and perhaps a heavy foot, are causing
> the relatively poor fuel economy, although according to this EPA web
> site:http://www.fueleconomy.gov/feg/bymodel/1999_Lexus_RX_300.shtml
>
> The 1999 RX 300's fuel economy ratings using the new revised (more
> realistic) fuel economy estimates are 17 city, 22 highway, so 16 in the
> city
> for mostly short trips is not all that bad.
>
> I would inflate the tires to 35 or 36 PSI cold to improve tire life and
> fuel
> economy.
> --
>
> Ray O
> (correct punctuation to reply)- Hide quoted text -
>
> - Show quoted text -

Thanks Ray, The link really helps, I will inflate the tires to 35.

Abid

**********
You're welcome! Try to combine the numerous short trips into fewer longer
ones where the engine has a chance to warm up completely. Your fuel economy
should improve a little.
--

Ray O
(correct punctuation to reply)
 >> Stay informed about: Gas Mileage on 1999 RX 300 

On Jul 2, 7:35 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
> <ak....TakeThisOut@att.net> wrote in message
>
> news:3f13b48b-f4ff-40ea-a40b-dd571432532e@d45g2000hsc.googlegroups.com...
> On Jul 1, 10:49 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
>
>
>
>
>
> > <ak....TakeThisOut@att.net> wrote in message
>
> >news:065e6905-e508-495d-ba7a-52e72baa9058@e39g2000hsf.googlegroups.com....
> > On Jun 30, 9:17 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
>
> > > <ak....TakeThisOut@att.net> wrote in message
>
> > >news:eecb41ea-eeba-4bbe-b2fc-cb54920fa503@m44g2000hsc.googlegroups.com....
>
> > > > My 1999 RX 300 has a very poor gas mileage, the best I get is 16 MPG,
> > > > I have a mechanic look at it and they replaced the spark plugs, Tune-
> > > > up, fuel injection cleaning and throttle body cleaning, it didn't help
> > > > much, I took it back and they don't know what else to do to get better
> > > > gas mileage, my wife tells me that it runs litle heavy specially when
> > > > you turn the car, I didn't feel it, someone told me 99 has
> > > > transmission issues and that might be a problem. I am at lost now,
> > > > please help.
>
> > > > Abid
>
> > > What kind of spark plugs were installed?
>
> > > How many miles on the odometer? It your RX front or all wheel drive?
>
> > > What type of driving is the vehicle used for? If it is used primarily
> > > for
> > > very short trips, the engine will not warm up sufficiently to go into
> > > closed
> > > loop operation.
>
> > > What are the typical driving conditions? City? Highway? Stop-and-go?
> > > What is the terrain like? Are the roads hilly?
>
> > > What kind of cargo and passengers are typically in the vehicle?
>
> > > When was the transmission fluid changed and what is the condition of the
> > > automatic transmission fluid?
>
> > > What pressure are the tires inflated to?
> > > --
>
> > > Ray O
> > > (correct punctuation to reply)
>
> > Thanks Ray, odometer reading is 104,000, front wheel drive, mostly
> > city driving in Houston, TX, short trips, no hills, mostly no cargo,
> > wife and two kids or all four of us, ATF looks clean but I have no
> > idea when it was changed, I check the pressure and now it is 32 on all
> > 4 tires, coupld of them were low 27/28.
>
> > Abid
>
> > ***********
> > Abid,
>
> > I think that the mostly short trips, and perhaps a heavy foot, are causing
> > the relatively poor fuel economy, although according to this EPA web
> > site:http://www.fueleconomy.gov/feg/bymodel/1999_Lexus_RX_300.shtml
>
> > The 1999 RX 300's fuel economy ratings using the new revised (more
> > realistic) fuel economy estimates are 17 city, 22 highway, so 16 in the
> > city
> > for mostly short trips is not all that bad.
>
> > I would inflate the tires to 35 or 36 PSI cold to improve tire life and
> > fuel
> > economy.
> > --
>
> > Ray O
> > (correct punctuation to reply)- Hide quoted text -
>
> > - Show quoted text -
>
> Thanks Ray, The link really helps, I will inflate the tires to 35.
>
> Abid
>
> **********
> You're welcome!  Try to combine the numerous short trips into fewer longer
> ones where the engine has a chance to warm up completely.  Your fuel economy
> should improve a little.
> --
>
> Ray O
> (correct punctuation to reply)- Hide quoted text -
>
> - Show quoted text -

Good suggession, we will do that, it just that sometime short trips is
all we have to do, drop off kid to a friends house, pick up movies or
food from Mc Donalds, quick stop to grocery store to pickup milk,
stuff like that, but with the gas price these days, we will make fewer
short trips, BTW my MB E500 gives me 18/19 in City and 23/24 on High,
bigger engine more HP - go figure.

Abid
 >> Stay informed about: Gas Mileage on 1999 RX 300 

<snip>

Abid, I also live in Houston, and my wife's 99 RX gets similar useage as you
describe.

We typically get about 17 MPG in town, and about 21 MPG on a road trip,
both, of course with the A/C on. Recently the mileage gradually dropped to
14.5/19, and a carbon-cleaning procedure and tune-up restored the mileage to
17/21.

See the thread titled "99 RX-300 Ignition Coil Falure " for the full story.

Good Luck!

--
Stephen Clark
99 Lexus RX-300
Houston, Texas USA
 >> Stay informed about: Gas Mileage on 1999 RX 300 

"Stephen Clark" <noone.RemoveThis@nowhere.net> wrote in message
news:7cOdnb9LyvwM_fDVnZ2dnUVZ_q3inZ2d@posted.oplink...
> <snip>
>
> Abid, I also live in Houston, and my wife's 99 RX gets similar useage as
> you describe.
>
> We typically get about 17 MPG in town, and about 21 MPG on a road trip,
> both, of course with the A/C on. Recently the mileage gradually dropped to
> 14.5/19, and a carbon-cleaning procedure and tune-up restored the mileage
> to 17/21.
>
> See the thread titled "99 RX-300 Ignition Coil Falure " for the full
> story.
>
> Good Luck!
>
> --
> Stephen Clark
> 99 Lexus RX-300
> Houston, Texas USA
>




http://groups.google.com/group/alt.autos.lexus/browse_frm/thread/1d981...7ffd066
 >> Stay informed about: Gas Mileage on 1999 RX 300 

<akhan.TakeThisOut@att.net> wrote in message
news:a563f920-2949-4df1-bd26-5f5eccecfe60@k13g2000hse.googlegroups.com...
On Jul 2, 7:35 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
> <ak....TakeThisOut@att.net> wrote in message
>
> news:3f13b48b-f4ff-40ea-a40b-dd571432532e@d45g2000hsc.googlegroups.com...
> On Jul 1, 10:49 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
>
>
>
>
>
> > <ak....TakeThisOut@att.net> wrote in message
>
> >news:065e6905-e508-495d-ba7a-52e72baa9058@e39g2000hsf.googlegroups.com...
> > On Jun 30, 9:17 pm, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
>
> > > <ak....TakeThisOut@att.net> wrote in message
>
> > >news:eecb41ea-eeba-4bbe-b2fc-cb54920fa503@m44g2000hsc.googlegroups.com...
>
> > > > My 1999 RX 300 has a very poor gas mileage, the best I get is 16
> > > > MPG,
> > > > I have a mechanic look at it and they replaced the spark plugs,
> > > > Tune-
> > > > up, fuel injection cleaning and throttle body cleaning, it didn't
> > > > help
> > > > much, I took it back and they don't know what else to do to get
> > > > better
> > > > gas mileage, my wife tells me that it runs litle heavy specially
> > > > when
> > > > you turn the car, I didn't feel it, someone told me 99 has
> > > > transmission issues and that might be a problem. I am at lost now,
> > > > please help.
>
> > > > Abid
>
> > > What kind of spark plugs were installed?
>
> > > How many miles on the odometer? It your RX front or all wheel drive?
>
> > > What type of driving is the vehicle used for? If it is used primarily
> > > for
> > > very short trips, the engine will not warm up sufficiently to go into
> > > closed
> > > loop operation.
>
> > > What are the typical driving conditions? City? Highway? Stop-and-go?
> > > What is the terrain like? Are the roads hilly?
>
> > > What kind of cargo and passengers are typically in the vehicle?
>
> > > When was the transmission fluid changed and what is the condition of
> > > the
> > > automatic transmission fluid?
>
> > > What pressure are the tires inflated to?
> > > --
>
> > > Ray O
> > > (correct punctuation to reply)
>
> > Thanks Ray, odometer reading is 104,000, front wheel drive, mostly
> > city driving in Houston, TX, short trips, no hills, mostly no cargo,
> > wife and two kids or all four of us, ATF looks clean but I have no
> > idea when it was changed, I check the pressure and now it is 32 on all
> > 4 tires, coupld of them were low 27/28.
>
> > Abid
>
> > ***********
> > Abid,
>
> > I think that the mostly short trips, and perhaps a heavy foot, are
> > causing
> > the relatively poor fuel economy, although according to this EPA web
> > site:http://www.fueleconomy.gov/feg/bymodel/1999_Lexus_RX_300.shtml
>
> > The 1999 RX 300's fuel economy ratings using the new revised (more
> > realistic) fuel economy estimates are 17 city, 22 highway, so 16 in the
> > city
> > for mostly short trips is not all that bad.
>
> > I would inflate the tires to 35 or 36 PSI cold to improve tire life and
> > fuel
> > economy.
> > --
>
> > Ray O
> > (correct punctuation to reply)- Hide quoted text -
>
> > - Show quoted text -
>
> Thanks Ray, The link really helps, I will inflate the tires to 35.
>
> Abid
>
> **********
> You're welcome! Try to combine the numerous short trips into fewer longer
> ones where the engine has a chance to warm up completely. Your fuel
> economy
> should improve a little.
> --
>
> Ray O
> (correct punctuation to reply)- Hide quoted text -
>
> - Show quoted text -

Good suggession, we will do that, it just that sometime short trips is
all we have to do, drop off kid to a friends house, pick up movies or
food from Mc Donalds, quick stop to grocery store to pickup milk,
stuff like that, but with the gas price these days, we will make fewer
short trips, BTW my MB E500 gives me 18/19 in City and 23/24 on High,
bigger engine more HP - go figure.

Abid

***************
I'm getting 18 to 19 MPG in suburban driving and 21 ~ 16 in highway driving
in my LS 430. I think the bigger engine doesn't have to work as hard as the
smaller one, and a light foot results in decent mileage like you are getting
in your Mercedes.
--

Ray O
(correct punctuation to reply)
 >> Stay informed about: Gas Mileage on 1999 RX 300 

On Jul 3, 6:28 pm, "Stephen Clark" <no....TakeThisOut@nowhere.net> wrote:
> <snip>
>
> Abid, I also live in Houston, and my wife's 99 RX gets similar useage as you
> describe.
>
> We typically get about 17 MPG in town, and about 21 MPG on a road trip,
> both, of course with the A/C on. Recently the mileage gradually dropped to
> 14.5/19, and a carbon-cleaning procedure and tune-up restored the mileage to
> 17/21.
>
> See the thread titled "99 RX-300 Ignition Coil Falure " for the full story.
>
> Good Luck!
>
> --
> Stephen Clark
> 99 Lexus RX-300
> Houston, Texas USA

Thanks Stephen,
 >> Stay informed about: Gas Mileage on 1999 RX 300