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H-Drive is a Mixed Blessing in Infiniti’s M35
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Midnight Oil Auto Blog
Ride along with BestRide Midnight Oil Auto Blog as we cover the auto shows, review the latest new cars, trucks and discuss the latest in automotive news and trends. Interact with auto experts who have years of experience in the auto industry and can help you find your BestRide.
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By Silvio Calabi
March 24, 2013 5:20 p.m.

Infiniti M-series sedans turn heads. Now theres a stretch version too, but only for China, where big back seats and chauffeurs are the rage among the new Capitalists.

Infiniti M-series sedans turn heads. Now theres a stretch version too, but only for China, where big back seats and chauffeurs are the rage among the new Capitalists.



After decades of scoffing at it, I have become not just a fan but a connoisseur of cruise control. This stems from an encounter last July between two Maine state troopers, one in a Ford Interceptor and the other overhead in a Cessna 182, and me in a 470-horsepower Chrysler 300 SRT8. It was friendly and even semi-humorous, but now my drivers license has a blot on it.

Which means no more, Sir, I see you have no violations so Ill let you off with a warning. Which in turn means tiptoeing down the interstates more carefully than ever. (My insurance is high enough.) The best way to stay under the radar, literally, is to set the cruise control at something barely permissibleI like 78and then clear the left lane so the dudes doing 85 or 90 can blow by and attract the heat.

So far, so good. With proper cruise control, it isnt even that boring; and the one in the Infiniti M35h may be the best Ive tried.

Heres how modern interactive/adaptive cruise control works: Turn it on. Toggle up or down to set the precise speed. (MPH appears in a little window.) Adjust the interval (approximately two, three or four school-bus lengths behind the car in front). Withdraw foot from throttle. The genie maintains the set speed until it sees traffic ahead; then it slows your car to the same speed and holds the pre-set gap. If the obstruction isnt moving, or it stops, cruise control should bring you to a stop too. (It cant yet swerve you into an empty lane.)

However, few CCs do this with the smoothness of a human brain processing distance and speed and fluidly adjusting throttle, brakes and steering. Faced with an obstacle, many such CCs just freak outchop the throttle abruptly, then get back onto the gas only agonizingly slowly after youve nosed your car to the side. But not this Infiniti; its ICC, Intelligent Cruise Control, really is. The transitions are smooth but positive and relatively quick; braking and acceleration are pretty much what most of us do. ICC lacks only a tailgate settingto impress upon the hellspawn clogging the passing lane that its high time to move overbut Infiniti has (probably wisely) resisted this.

ICC can slow the M35h to a crawl and then recovereven from toll booths, at least if you have E-ZPass. The system flawlessly negotiated I-95 from Massachusetts through Connecticut and right across Manhattan to the George Washington Bridge with no human inputs beyond steering. At the GW, however, we learned that once the Infiniti comes to a complete stop, ICC shuts down and has to be re-booted.

Why, youre wondering, the lecture on cruise control? Because the rest of the M35h is so compromised.

It’s not the cabin or the comforts and conveniences, which are every inch what is expected from a $66,245 sedan loaded with Technology, Deluxe and Premium packages. (Although the satnav did go into an endless Groundhog Day loop in metro DC, complete with an unfinished highway on-ramp.) Nor is it the advanced suspension, which produces a refined and controlled ride.

No, the compromise is in the M35hs hybrid gas-electric drive, which on the one hand is quite fuel-efficient but on the other suffers from horrid lag whenever the computer has to choose between the two. At a stop, the genie sits and thinks, OK, whats it gonna be . . . ? while the drivers foot sinks ever farther toward the floor. And then a rush of torque catapults the car ahead like a demented rabbit. When we lift off the throttle in surprise, the car sags back into the wet sand again. Not even the multi-mode, adaptive 7-speed transmission helps; the Sport setting just amplifies the abruptness, and dont even try Eco unless youre just morbidly curious.

Fortunately, once its up to speed, the M35h stays there with considerable aplomb and even fuel economy. Thirty MPG at 78 MPH in a luxury car is commendable, but this particular good deed does not go unpunished. Infiniti, get the h out! Or tune it up to restore the sweet harmony between man and machineas in your other M sedans, the 37 and 56.

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