Infiniti FX37S
Specs, engines and history
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By Sarah Whitmore, Senior Automotive Writer Reviewed by Oleksandr Hnatiuk
- Built
- 2008–2013
- Top power
- 242 kW (329 PS)
Which Infiniti FX37 to buy: our verdict
Our verdict · Sarah Whitmore
- Buy an FX37 if you want a distinctive, well-equipped sporting SUV with a sweet V6 and you drive moderate distances. A later car with the facelift, recognisable by its revised grille and front bumper, is the best choice.
- Choose the FX30d if you cover high mileage: its 550 Nm and lower fuel use suit long journeys better.
- Check service records for the seven-speed automatic, the brakes and discs, the all-wheel-drive system and the adaptive dampers, and expect tyre costs on 20- or 21-inch wheels.
- Skip it if you need a large boot or roomy rear seats.
The Infiniti FX37 is the 3.7-litre V6 model of the second-generation Infiniti FX (S51), unveiled at the Geneva Motor Show on 4 March 2008 and sold in Europe from October 2008. Its VQ37VHR engine gives 235–242 kW (320–329 PS, sources differ), driving all four wheels through a seven-speed automatic. In 2013 the FX range was renamed Infiniti QX70.
In short
- Second-generation FX (S51), built in Tochigi, Japan; FX37 in Europe from October 2008, renamed QX70 for the 2014 model year.
- Engine: VQ37VHR 3,696 cc V6 with variable valve lift, 235–242 kW and 360 Nm, seven-speed automatic, ATTESA E-TS all-wheel drive.
- Size: 4,865 mm long, 2,885 mm wheelbase, about 2,012 kg; boot 410–1,305 litres.
- Siblings: FX35, FX50 with a 5.0 V8 and, from late 2010, the FX30d diesel with 177 kW (240 PS).
Infiniti FX37 at a glance
| Fact | Value |
|---|---|
| Model | Infiniti FX, second generation (S51) |
| Revealed | Geneva Motor Show, 4 March 2008 |
| FX37 on sale in Europe | from October 2008 |
| Plant | Tochigi, Japan |
| Engine | VQ37VHR 3.7 L V6 petrol |
| Power | 235–242 kW (320–329 PS) |
| Gearbox | 7-speed automatic |
| Renamed | Infiniti QX70 (2013, model year 2014) |
Infiniti, Nissan's premium brand, launched the first FX in 2003 as a sporting crossover with a long bonnet and a coupé-like roof. The second generation kept the shape but sharpened the details: a bigger grille, gills behind the front wheels and wheels of up to 21 inches, according to the old 1cars text. The brand's story is in the history of Infiniti, and every model is on the Infiniti brand page.
VQ37VHR V6, seven-speed automatic and AWD
| Version | Engine | Power | Torque | 0–100 km/h | Top speed |
|---|---|---|---|---|---|
| FX37 (UK/Europe) | VQ37VHR 3.7 V6 petrol | 235 kW (320 PS) at 7,000 rpm | 360 Nm at 5,200 rpm | 6.8 s | 233 km/h (145 mph) |
| FX30d | V9X 3.0 V6 turbodiesel | 177 kW (240 PS) | 550 Nm | – | – |
| FX50 | VK50VE 5.0 V8 petrol | – | – | – | – |
| FX35 (other markets) | VQ35HR 3.5 V6 petrol | – | – | – | – |
The VQ37VHR is a naturally aspirated 24-valve V6 with Nissan's VVEL variable valve lift, the same engine family used in the Infiniti G37 and the Nissan 370Z. Some sources list 242 kW (325 hp) for the European FX37, while UK manufacturer data give 235 kW (320 PS). The seven-speed automatic arrived with the 2009 FX and was shared with the G37 coupé. In Europe, all-wheel drive was standard; the ATTESA E-TS system sends drive mainly to the rear wheels and adds front-axle torque when needed.
Infiniti also made the FX the basis of a limited Vettel Edition in 2012, with 420 PS, of which 150 were built and 50 sold in Western Europe.
Size, luxury cabin and a 410-litre boot
| Parameter | Metric | Imperial |
|---|---|---|
| Length | 4,865 mm | 191.5 in |
| Width | 1,925 mm | 75.8 in |
| Height | 1,680 mm | 66.1 in |
| Wheelbase | 2,885 mm | 113.6 in |
| Kerb weight | 2,012 kg | 4,436 lb |
| Boot, seats up / folded | 410 / 1,305 l | 14.5 / 46.1 cu ft |
| Fuel tank | 90 l | 23.8 US gal |
| Tyres | 265/50 R20 | – |
The cabin is the FX's strongest point: soft leather, wood or aluminium trim and a long equipment list. According to the old 1cars text, higher trims offered an all-round camera view (Around View Monitor), adaptive dampers (Continuous Damping Control), sports seats, a rear-seat entertainment screen and separate climate control for the rear. The sloping roof limits rear headroom and boot space: 410 litres is modest for a car of this length. The old 1cars text quoted only 376 litres.
Thirst, CO2 and the cost of running a 3.7 V6
The FX37 is thirsty. UK data give 23.3 mpg (UK), about 12.1 l/100 km, and 284 g/km of CO2; the old 1cars text reports up to 20 l/100 km in town and about 10 l/100 km at a steady cruise. With a 90-litre tank the range is still around 740 km. To compare annual fuel costs with a diesel such as the FX30d, try our fuel cost calculator. High CO2 also means high road tax in many European countries.
Trims, equipment and safety
Trim names varied by country, with sports suspension, sports brakes and larger wheels on the sportier versions, according to the old 1cars text. We found no Euro NCAP test of the second-generation FX, so there is no European crash-test rating to quote.
The old 1cars text criticised the brakes: under repeated hard stops the standard brakes overheated and caused vibration through the steering wheel. The optional sports brakes address this.
Rivals: how the Infiniti FX37 compares
The FX37 competed with sporting SUVs such as the BMW X6, the Porsche Cayenne GTS and the Acura ZDX. Compared with the German cars it offered a high-revving naturally aspirated V6 and a rich specification, but no diesel until late 2010. With 235 kW and about 2,012 kg, it has about 117 kW per tonne by our calculation. Infiniti's smaller QX50 is the later, more practical alternative within the brand.
Rivals
Compare with…
Compare Infiniti FX37S with
- Acura ZDX quick spec comparison
- Porsche Cayenne GTS quick spec comparison
- BMW X6 quick spec comparison
-
EV version
Ended 2025
- Years
- 2009–2025
- Body
- SUV
- Fuel
- Petrol, Electric
- Power
- 220–373 kW (299–507 PS)
2 generations
- ZDX
- II
-
Ended 2020
- Years
- 2008–2020
- Body
- SUV, Coupe
- Fuel
- Petrol
- Power
- 298–368 kW (405–500 PS)
3 generations
- 957
- 958
- E3
-
In production
- Years
- 2007–present
- Body
- SUV
- Fuel
- Petrol, Diesel
- Power
- 190–423 kW (258–575 PS)
3 generations
- E71
- F16
- G06
Infiniti FX37S in our rankings
- No. 23 of 88 · Most powerful Japanese cars (242 kW · top 28%)
- No. 86 of 197 · Most powerful SUVs and crossovers (242 kW · top 45%)
- No. 386 of 859 · Most powerful cars (242 kW · top 46%)
- No. 654 of 912 · Longest-running car nameplates (5 years · top 77%)
More powerful than 72% of ranked Japanese cars in the 1CARS catalog (No. 23 of 88).
Infiniti FX37S photos 14
Infiniti FX37S videos 2
Test drive
Video overview
FAQ
What engine does the Infiniti FX37 have?
The FX37 has the VQ37VHR, a 3,696 cc naturally aspirated V6 with variable valve lift. UK data give 235 kW (320 PS) at 7,000 rpm and 360 Nm at 5,200 rpm; other sources quote 242 kW. It drives all four wheels through a seven-speed automatic.
When was the Infiniti FX37 made?
The second-generation FX was unveiled in March 2008, and the FX37 went on sale in Europe in October 2008. In 2013 the range was renamed Infiniti QX70 for the 2014 model year, and the QX70 continued in some markets until 2017–2019.
How big is the Infiniti FX37 boot?
The FX37 offers 410 litres with the rear seats up and 1,305 litres with them folded, according to UK manufacturer data. That is modest for a 4,865 mm SUV because of its sloping, coupé-style roof.
What is the fuel consumption of the Infiniti FX37?
Official UK data give 23.3 mpg (UK), about 12.1 l/100 km, with CO2 emissions of 284 g/km. In city driving consumption can rise towards 20 l/100 km, while steady motorway cruising can bring it down to about 10 l/100 km.
Is the Infiniti FX37 the same as the QX70?
Yes, essentially. In 2013 Infiniti renamed its models, and the FX became the QX70 for the 2014 model year with a light facelift. The QX70 3.7 uses the same V6 engine and seven-speed automatic as the FX37.
Data sources
Data checked by an editor against the sources below.
- The text of this article (1cars archive)
- Wikipedia - Infiniti FX
