Infiniti QX70 SUV
Price £42,370 - £54,025
- Unique styling
- Powerful engines
- Attractive list price
- Ride is stiff
- Hugely expensive to run
- Some materials could be better-quality
At a glance
"If you want a sporty SUV and are prepared to accept high running costs, then the Infiniti QX70 is worth a look."
The Infiniti QX70 (previously Infiniti FX) is a large car with big engines and high running costs. There isn't a slow model in the range, with both petrol engines capable of going from 0-62mph in less than seven seconds (the fastest even dips under the six-second barrier).
A stiff suspension set-up means it corners well, too, but it's worth taking a test drive just to see if the ride is soft enough for you to live with on a daily basis. The Infiniti QX70's main rival is the BMW X6 and it comes in three main specifications – entry-level GT, mid-range S and top-of-the-range S Premium.
MPG, running costs & CO2
No QX70 is going to be cheap to run
Lagre dimensions and a heavy weight are a recipe for high running costs. The worst offender in the range is the 5.0-litre S Premium, which manages to return only 21.6mpg in fuel economy and emits a whopping 307g/km in CO2. The most efficient is the 3.0-litre diesel, but event that only manages 32.8mpg and still pumps out 225g/km of CO2 for a £290 annual road tax bill.
Both petrol models will cost you £505 a year in road tax thanks to those high CO2 emissions. Servicing and maintenance will be less expensive than you'd think thanks to Infiniti's Nissan connection, though.
Engines, drive & performance
Sporty handling and powerful engines
All versions of the QX70 are pretty fast – you can take your pick from a 3.7-litre V6 or a 5.0-litre V8 petrol that can accelerate the QX70 from 0-62mph in 5.8 and 6.8 seconds respectively. The 3.0-litre diesel V6 is slower than both petrol engines and quite a lot noisier, but inevitably has the lowest running costs.
All models come with an effective seven-speed automatic gearbox that changes up and down through the gears quickly and smoothly – but you can take over yourself using paddles mounted behind the steering wheel if you prefer more control. The QX70 tackles corners well for a car of its size and height thanks to a clever four-wheel steering system and four-wheel drive.
Despite its high centre of gravity, the car tends not to lean into corners either, so there isn't very much body roll. However, the steering is a little numb and the ride a bit too firm at times.
Interior & comfort
Interior is comfortable but ride could be softer
The QX70 is focused on being a sporty luxury car, so occupants need to be ready for a fairly hard ride. Some models come with huge 21-inch alloy wheels that further dent ride comfort. In contrast, the interior is a very pleasant place to be, with comfortable heated and cooled seats that can also be fitted with a massage function. General wind, road and tyre noise is kept to a minimum, but while the petrol models are nice and quiet, the diesel engine can be a bit rattly on the go.
Practicality & boot space
For a car of this size, the boot is too small
Any car that looks as sporty as the QX70 does must make practicality compromises inside. That means a 410-litre boot with the rear seats in place, which is over 100 litres less than you get in either a Porsche Cayenne or BMW X6. Lower the split-folding rear seats flat and that capacity expands to 1,305 litres – but this is still unimpressive for a big car like the QX70.
The interior is thankfully spacious enough to comfortably seat four adults, although headroom isn't the best. Legroom is fine, however, and the back seats can be reclined for extra comfort.
The QX70 also has 'scratch shield' paint, but you'd have to be very reckless indeed to actually scratch it, as there's a range of cameras fitted to the front, back and sides of the car giving you an all-around view while parking.
Reliability & safety
Nissan engines should prove reliable
With Infiniti being the luxury arm of Nissan – similar to Lexus being Toyota's upmarket brand – all of its engines have been tried and tested across the Nissan range. It's worth noting that while Nissan ranked a healthy 12th in our Driver Power 2013 customer satisfaction survey's manufacturer list, that was a drop of eight places from its 2012 finish.
However, a lot of the criticisms from customers on issues like build quality won't apply to the upmarket Infiniti – which is probably good, seeing as not one Infiniti car made into Driver Power's top 150 cars. There have been no major faults or recalls reported, either.
In safety terms, the QX70 secured the maximum five-star rating in the independent Euro NCAP crash test. It's equipped with driver and passenger airbags and electronic stability control as standard. There's also the option of adding more safety equipment, including lane-keeping assistance and an intelligent braking system that can brake the car without driver intervention. Interior quality is also pretty impressive, but some materials lack the upmarket feel of some premium rivals.
Price, value for money & options
Lots of kit, but depreciation is high
All Infinitis are packed with standard equipment, so even the entry-level QX70 is decked out with an impressive range of accessories and gadgets. The list includes a reversing camera, cruise control, air-conditioning, heated and cooled leather seats and 20-inch alloys.
If you spend a bit more money for an S or S Premium models, you'll get cruise control with automatic braking, sat nav and lane-departure prevention. But be warned – depreciation is very high, so the QX70's resale value on the used-car market is poor.