Feeds
Infiniti M35h

Review: Infiniti M35h hybrid sports saloon

To infinity and... er... Skelmersdale

Choosing a cloud hosting partner with confidence

Torque of the town

This combination eliminates the need for a torque converter and allows for the full decoupling of the V6 when there is adequate battery charge to drive the car using electricity alone. It also smooths things out during gear changes and when the V6 is being tuned in or out of proceedings.

The drivetrain architecture allows the M35h to run with either just the electric motor or the petrol engine, or a combination of the two. It also saves fuel by automatically switching off the engine when the car is stopped or stopping. In fact, as soon as you start to slow down the M35h usually drops into EV mode. Think stop/start but writ large.

Infiniti M35h drivetrain schematic

The drivetrain

Being modular the IDRH system will eventually find itself in most if not all of Infiniti’s forthcoming models, including presumably the new premium compact that will go into production at Nissan’s Sunderland factory in 2015.

In the M35h, the electric motor serves a triple purpose: as a drive unit, a starter motor, and a generator to recover energy during deceleration and braking. On paper it’s one of the most compact and efficient hybrid system on the market and when it comes to energy recuperation it seems particularly efficient.

Even after deliberate attempts to drain the battery by maximising the EV-only range - the maximum electric-only range is quoted as 1.2 miles but I managed to get over two easily - the battery recovered to a full charge surprisingly quickly. Of course, part of the trick is the engine’s ability to charge the battery directly.

The compact size of the hybrid drive pays dividends when it comes to kerb weight. At 1830kg, the M35h is 95Kg lighter than a BMW ActivHybrid 5 and 80kg lighter than Lexus GS450h. That’s the equivalent of an extra passenger.

Infiniti M35h energy flow

Energy flow 1: driving in EV mode

Once inside the M35h, you’ll search in vain for an ‘EV’ button. In fact, the only obvious e-car giveaways are the green EV light in the tachometer dial and the power/charge gauge.

But don’t assume this is hybrid-lite. You can travel under electric power at speeds up to 65mph, and in everyday motoring I was surprised to see how often the tacho needle would suddenly drop down to zero even when my foot was still on the throttle pedal.

Such is the refinement of the Infiniti that even with the stereo turned off it’s difficult to tell when the V6 has decided it’s not needed and metaphorically stepped outside for a fag.

On the emissions front, the Infinti screws the global pooch to the tune of 159g/km of CO2. By comparison, the Lexus GS450h returns 141g/km but the Lexus achieves this by using a CVT transmission, something that in my opinion has no place in a car with even vaguely sporting pretensions.

Infiniti M35h energy flow

YEnergy flow 2: the V6 can charge the battery pack directly

The manufacturers’ economy figures as always err on the optimistic side. I covered over 350 miles in my week with the M35h and averaged 33.6mpg. That’s 16.8mpg less than the extra-urban best and 7.3mpg less than the on-paper average.

I should say in the car’s defence that most of the distance I covered was in a style best described as energetic and with the gearbox in Sport mode. You see, in addition to the manual gear selector, the M35h has four driving modes selected by a rotary knob on the centre console: Normal, ECO, Sport and, appositely given the recent weather, Snow.

Website security in corporate America

More from The Register

next story
Man buys iPHONE 6 and DROPS IT to SMASH on PURPOSE
Yarrrgh! 'Tis Antipodean insanity, ye crazy swab
Oi, Tim Cook. Apple Watch. I DARE you to tell me, IN PERSON, that it's secure
State attorney demands Apple CEO bows the knee to him
4K-ing excellent TV is on its way ... in its own sweet time, natch
For decades Hollywood actually binned its 4K files. Doh!
Your chance to WIN the WORLD'S ONLY HANDHELD ZX SPECTRUM
Reg staff not allowed to enter, god dammit
Phones 4u website DIES as wounded mobe retailer struggles to stay above water
Founder blames 'ruthless network partners' for implosion
Monitors monitor's monitoring finds touch screens have 0.4% market share
Not four. Point four. Count yer booty again, Microsoft
DARPA-backed jetpack prototype built to make soldiers run faster
4 Minute Mile project hatched to speed up tired troops
prev story

Whitepapers

Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.