This is one topic which I am extremely qualified
to speak on as I drive over 25,000 miles a year
and have had four LS models over the last 8 years
(I buy a new USED one every 2 years in order to
save money). Here's my list:
1990 LS400 bought with 150K miles
(now has over 250K miles and heads have never been off!)
1994 LS400 Anniversary Edition bought with only 80K Miles
(sold it to a friend and he totaled it - thank god he and he wife were not hurt - they rolled 3 times in UTAH!).
1998 LS400 bought with 100K from original owner
(should have never sold it! Circumstances)
2001 LS430 bought with 78K from original owner
I used to drive from AZ to CA and CA to AZ constantly
as well as all over both states. I would also drive the
SAME ROUTES many times which consisted of BOTH
HWY and CITY and a mix of both.
I can tell you that the 98, 99 and 2000 LS400's are
remarkable on FUEL ECONOMY because that was
the year (1998) that they got not only a 50HP
boost but something even more important...
CVVT (Constant Vaeriable Valve Timing).
CVVT allows you ignition timing to be optimized
at ANY speed CONSTANTLY.
IF you are going to buy a used LS400 I would
only consider a 98 99 or 2000. Or... just get
a 430.
THE BOTTOM LINE
The 98 99 and 2000 get the EXACT SAME FUEL
ECONOMY as the LS430. When I say exact I mean
ACROSS THE BOARD based upon CITY and HWY
and various different driving styles.
THis is amazing for the 430 considering it is
a heavier and more powerful car (it also steers
much tighter like a MBZ and BMW).
WHAT ARE THE NUMBERS?
The numbers vary GREATLY based upon HOW
you drive. Also, I have noticed that a fresh
oil change (I use full synthetic and do it
every 5K) and fresh wash and wax can improve
MPG on the freeway by 2 MPG!!!
In AZ most speed limits are 75 which means I
do 85 to 90. In CA it's 65 and I only do 75.
Freeway mileage can vary more than city
because of the higher speed and resistance
(internally and externally).
Here's my average for 98 LS400 and 2001 LS430
25 MPG on the HIGHWAY
and
20 MPG in the CITY
For those of you who can do it. If you go
only 65 on the highway you can get
27 MPG in a 98 99 2000 LS 400 or 01 LS 430.
No one believes me and I even bet my friend
$50 and he sat there in the car and watched
as we drove from Santa Barbara CA to Palm
Springs CA and got 27.5 MPG!
I told me when we were in AZ that I'd bet
him another $50 I could get 29.5 from PRESCOTT AZ
back to PALM SPRINGS. He wouldn't bet me and it was
good as I would have one since I had done it
before (the drive is from 5,000 ft elev in PRESCOTT
down to sea level in PALM SPRINGS-LOL!).
City mileage varies greatly only based on driving
habits. The LS gets amazing mileage once it's
rolling and up to speed. However, the number
on killer is going from light to light. Therefore
if you just quit accelerating when you know you
are going to hit a light you get to your location
in the same time.... however, you're carrying more
speed without the pedal to do it.
Like LARRY DAVID said on CURB YOUR ENTHUSIASM
when asked about the fuel economy of the toyota
camry in the city:
35MPG in the city? Are you sure?
"Well.. of course it depends upon the city!"