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First drive: Infiniti M35h

BIK List Price
Infiniti M35h BIK list price
BIK Percentage
Infiniti M35h BIK Percent
Infiniti M35h CO2
Combined MPG
Infiniti M35h MPG


After a decade of domination by Toyota, Lexus and Honda, many other manufacturers are in the process of launching hybrid cars.

It is perhaps surprising then that the first alternative to a Toyota or Lexus full hybrid (where a vehicle can be driven on electric power, rather than the motor being just used as a power boost for the engine) is one of the newest car brands in the UK.

The Infiniti M35h pairs a 306bhp 3.5-litre V6 petrol engine with a 68bhp electric motor, resulting in a combined total power output of 364bhp, and giving it the torque to match a powerful diesel engine.

Its 0-62mph sprint time of 5.5 seconds is faster than any other hybrid on sale, and it has an edge over six-cylinder diesel models in its class.

Unlike Lexus whose hybrid models use a CVT, Infiniti has chosen a conventional torque converter automatic gearbox which should have more appeal for driving enthusiasts, and while other manufacturers have adopted electric power steering systems to save fuel, Infiniti uses an electro-hydraulic set-up with a few concessions to efficiency.

In an era where the performance of a car has to be exaggerated by over-size wheels, it’s a strange quirk of the M35h that in view of the need to keep emissions to a minimum, the fastest M car runs on the smallest wheels at 18 inches.

But 18-inch wheels are large enough, although the M’s sweeping profile seems to accentuate its length of almost five metres, a few centimetres longer than an Audi A6, BMW 5 Series or a Mercedes-Benz E-Class.

Step inside the M and it’s hard to imagine a cabin with a more luxurious feel. Leather is the same standard as expensive upgrades on other cars, while a powdered silver coating in combination with hand buffing brings out the appearance of the grain in the wood panels, making it seem more like an expensive musical instrument than a car dashboard.
The M35h also comes with a full complement of safety technology as standard, including a blindspot warning, lane departure warning and prevention, adaptive cruise control, collision warning and low speed following that will allow the car to release and apply the brake to automatically keep pace with stop-start traffic.

The electric motor is capable of powering the car on its own for short distances, and will also allow the car to run in engine shut-down mode at higher speed. The information display has a function that keeps count of EV mileage, and during 1,800 miles in the M35h over two weeks, it ran in EV mode for about 600 miles, while the interaction between both modes was seamless.
Before other premium cars in this sector get in on the hybrid act in 2012, the only current hybrid direct rival is the long-in-the-tooth Lexus GS450h, and the Infiniti M35h, being a much younger car and having a more driver-focused chassis, is comfortably better on both an emotional and rational level.

There is a new GS due to launch that will, no doubt, provide stiffer competition for the Infiniti, together with petrol-electric hybrids due from BMW, Mercedes-Benz and Audi in 2012. For now, the Infiniti could perhaps tempt some company directors away from their diesel cars, hence our inclusion of the latest Jaguar XF 3.0 D S in the cost comparison.

The M35h has an advantage in not carrying the 3% diesel supplement in BIK tax, as well as a more favourable AFR payback rate for drivers if they were able to achieve anywhere near the official combined cycle 40.4mpg (I achieved an average of 36mpg on my trip).

Unfortunately, its CO2 emissions of 162g/km put the car the wrong side of the 20% writing down allowance threshold, although Infiniti says it’s working hard to bring emissions down further.

So the M35h raises the bar for hybrid saloons and for the first time brings a big dash of driver appeal. But, for many fleets, a diesel alternative would be the more cost-effective choice, while there is also a brace of new hybrid rivals waiting in the wings.

CO2 emissions
Not bad for such a powerful car, but overtaken for fuel efficiency by new models from Lexus and BMW in 2012. Inifini recognises the importance of the 160g/km threshold in the UK and is already working to improve from 162g/km.
Fuel costs
Should be a 40mpg-plus car, but will only really do this - like all full hybrids - when getting he benefit of urban driving when the car spends time powered by the electric motor alone, and recharging its battery when decelerating.
Residual values
On a par with equivalent petrol models, although diesel rivals have stronger RVs. On the brighter side, the Infiniti has as standard many of the features fitted as options on rival executive cars, so a like-for like specification comparison would normally favour the M on price.
Running costs
The most frugal Infiniti to date will only have a short time before it's overshadowed by a brace of new hybrid saloons, but compares well with some diesel cars in the same class and price bracket.
Driver appeal
The Infiniti's strongest point. A true high-performance saloon that's exclusive and is beautifully finished inside. Few will be able to match it for standard equipment, either.
FN Verdict
Infiniti has a tough job on its hands establishing itself with fleets. Cars like the M show it's capable of competing for quality and performance, but it needs to start introducing products that are farther ahead of the game for fuel consumption and CO2 emissions to compete throught the life-cycle of the car.
Top Speed
Infiniti M35h Top Speed
VED band
Infiniti M35h Ved
Fuel Type
Infiniti M35h Fuel Type
Residual Value
3 Year 60k : £14,050
4 Year 80k : £10,200
Running Cost (ppm)
3 Year 60k : 75.03
4 Year 80k : 66.49

CO2 emissions and fuel consumption data correct at time of writing. The latest figures are available in the Fleet News fuel cost calculator and the company car tax calculator.

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