Joe Z

iTrader: (10)

Re-read all your posts...

I didn't catch that... As far as I know, I haven't heard about a 350 N/A replacement...

But if its going to happen I expect it to have Twins..

These motors are approaching on 10 years and Lexus knows they are way overdue for updates / upgrades.


~ Joe Z

Pawel062

Joe Z, any chance of a manual is200t? Or any Lexus coming in manual in the future?

jhs82

I doubt it, since the 8 speed auto is introduced to the regular IS.
Lexus is luxury, and manual gearbox is not luxury.

4TehNguyen

iTrader: (1)

when youre trying to hit the higher MPG requirements set by CAFE, 8 spd auto will always beat out a 6 speed manual. Would not want to have to drive an 8 speed manual

05RollaXRS

No, that is not the reason why. BMW is equally as luxurious as Lexus, but they offer 6 speed manual. Lexus has abandoned it because Lexus does not feel the sales number justify the production.

LH1

I'm not going to be disappointed if the updated 350 engine has twins but I would prefer a NA V6.
Lexus could simply increase displacement to 3.7 or 3.8 and call it a day. 25-35 more hp would be a perfect mid cycle refresh. It would have to be far cheaper than making a whole new twin turbo engine too.

Hoovey689

iTrader: (16)

As reported earlier, FI 6 and 8 are on the horizon but we know nothing about them.

jhs82

In my opinion BMW is premium, not luxury. Lexus is above BMW, Merc and Audi.

Fizzboy7

In the past, that idea would work. But the bigger 3.7 and 3.8 liter V6's don't get good fuel mileage. I can't see them increasing engine size, when today's push is better mpg's over everything else.

CJW

iTrader: (1)

As someone who has owned a ton an turbo engines, their efficiency is overstated. I'm guessing cylinder de-activation like Honda used would do more for economy than downsizing and adding a turbo.

4TehNguyen

iTrader: (1)

turbo is more for volumetric efficiency (more power in a smaller engine) not fuel efficiency. When you pump more air into the engine you are also pumping more fuel into it

hades281

On paper, the Turbo really is the best of both worlds. You'll get low displacement 4-cylinder fuel economy when you're not in boost, so you can take advantage of that on the highway, steady speed driving, even idling. That's coupled with a lot more power potential when you want it, and in those moments you'll pay for it in fuel but at least you have the option. Plus the engine may weigh less.

I actually jumped on the '14 IS350 because of the old engine. For $45k I wanted the quality that comes with years of working the kinks out, and took the "1st year risk" on the less important parts. I think Lexus will do an amazing job with their 2.0T because that's the reputation they have and they should know that the durability of this configuration really needs to be scrutinized, but even the 2.5 and 3.5 V6s had several design issues throughout several years of production (defective valve springs, fuel rail recall, IS250 carbon buildup, VVTi startup rattle).

The cool thing about Lexus is that they stood behind all of these issues.

KumaF

Turbo engines will always have some lag. I agree that the N55 has almost no turbo lag when you drive around town, but the lag is quite noticeable when you step hard on the gas off the line. Would much prefer a super charger over a turbo.

4TehNguyen

iTrader: (1)

the boost will be there at X rpm whether you want it or not, you cant just turn off the boost. What you are really getting is V6 power out of a i4 size powerplant but with less fuel economy as the i4. Turbos grant volumetric efficiency which does not necessarily mean fuel efficiency. If turbos always meant fuel efficiency then all cars would already have it.

lamar411

BMW is premium, not luxury?? What are you on?