Huskydog

2006 ES350 - I had 2 coils replaced under warranty. The dealer tech rep said it's a common problem. I asked if I'd be in there 4 more times, or can they just replace them all now. His response was "well we don't know which ones will be bad". I was a little PO'd after bucking up for a lexus to hear this is a common problem (I had other issues with this specific dealership, so I'm always irritated with them). Had a 3rd replaced after warranty was up, just went in for a 4th (all different coils). This time at my local shop they found a bunch of rodent damage; tried to rewrap exposed wires, but too much damage and corrosion. They're waiting on new wire harness, but in the meantime it's running ok, but throwing a code because of the added resistance in the corroded wires (as it was explained to me).
So to summarize - coil failure is common (says my dealer) and check the condition of your wires.

AlbertG

covered that early on.
For my issue, I'm leaning to a leaky valve cover gasket ring around the plug hole. I've got about 170 miles on mine since I cleaned off the oil residue and it's running just fine.
I want to see if the residue comes back and creates the misfire again. that way I will know "FOR SURE" that was the issue

AlbertG

trip meter just passed 400 miles.
Hopefully I don't jinx myself but its still running correctly.

ralphtc

jagtoes

What do you consider gas guzzler. I've a 2010 with 50K miles on it and the overall mileage from new is 27 mpg . On long trips I run 31 and in town 24 and this is on regular gas. Just another data point

ralphtc

Maybe it is because my prior 2 cars had CVT transmissions, prior to the Lexus was a 2011 Maxima and that car had more HP, but to me it was better on gas due to having a transmission that never shifted, I averaged great mpg with the Maxima. I guess it’s just me, it has been 6 years since I’ve owned a car with a traditional 6 speed automatic. I’m still adjusting, it will be a year in April I’ve had the car, I have just been so used to the CVT transmissions, and have seen great mpg with both of my former cars, which is why I feel like my Lexus isn’t as great, and I need to fill this car up more often than I had to with my Maxima, and Subaru. I do love my Lexus though; great car.

igzy

I like numbers when it comes to comparing mpg, speed, performance, etc. I had a Maxima as well, and it too recommended premium gas. Back to numbers:

Fuel Consumption:
2011 Nissan Maxima (CVT): Premium Gasoline 22 combined city/highway MPG 19 city 26 highway 290HP GROSS WEIGHT 4698 lbs
2007 Lexus ES350 (6-sp AT): Premium Gasoline 22 combined city/highway MPG 19 city 27 highway 270HP GROSS WEIGHT 4679 lbs.

1/4 Mile:
2011 Maxima: 14.3 sec @ 97.7 mph
2007 ES350: 14.6 sec @ 99.0 mph

My nickel (no cents in circulation in Canada ) :
20HP+ on the Maxima vs ES350 may as well be a measuring error...

Sources: www.fueleconomy.gov www.roadandtrack.com www.motortrend.com