The Infiniti G35 Sedan (V36) 3.5i V6 24V X AWD, produced from 2006 to 2008, represented a significant offering in the entry-level luxury sport sedan segment. Positioned as a premium trim within the V36 G35 generation, this all-wheel-drive variant combined a potent V6 engine with a five-speed automatic transmission, aiming to deliver both performance and all-weather capability. It was a key model for Infiniti as they sought to establish a stronger foothold in the North American market, competing with established European and domestic rivals like BMW, Mercedes-Benz, and Cadillac.
Technical Specifications
| Brand | Infiniti |
| Model | G |
| Generation | G35 Sedan (V36) |
| Type (Engine) | 3.5 i V6 24V X AWD (309 Hp) |
| Start of production | 2006 |
| End of production | 2008 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 12.4 l/100 km (19 US mpg) |
| Fuel consumption (extra urban) | 9.4 l/100 km (25 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 5.6 kg/Hp |
| Weight-to-torque ratio | 4.8 kg/Nm |
| Power | 309 Hp @ 6800 rpm |
| Power per litre | 88.3 Hp/l |
| Torque | 355 Nm @ 4800 rpm (261.83 lb.-ft. @ 4800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | VQ35HR |
| Engine displacement | 3498 cm3 (213.46 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 95.5 mm (3.76 in.) |
| Piston Stroke | 81.4 mm (3.2 in.) |
| Compression ratio | 10.6:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4.9 l (5.18 US qt | 4.31 UK qt) |
| Coolant capacity | 9 l (9.51 US qt | 7.92 UK qt) |
| Kerb Weight | 1720 kg (3791.95 lbs.) |
| Max. weight | 2172 kg (4788.44 lbs.) |
| Max load | 452 kg (996.49 lbs.) |
| Trunk (boot) space – maximum | 411 l (14.51 cu. ft.) |
| Fuel tank capacity | 76 l (20.08 US gal | 16.72 UK gal) |
| Length | 4750 mm (187.01 in.) |
| Width | 1733 mm (68.23 in.) |
| Height | 1468 mm (57.8 in.) |
| Wheelbase | 2850 mm (112.2 in.) |
| Front track | 1520 mm (59.84 in.) |
| Rear track | 1529 mm (60.2 in.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 5 gears, automatic transmission |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Air suspension |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Tires size | 225/55 R17 |
Powertrain & Engine Architecture
The heart of the G35 Sedan 3.5i X AWD was the VQ35HR 3.5-liter V6 engine. This engine was a cornerstone of Nissan and Infiniti’s powertrain strategy, renowned for its smooth operation, robust construction, and impressive power output. The “HR” designation signified “High Revolution,” indicating enhancements to the engine’s valvetrain and intake system for improved high-RPM performance. It featured a 60-degree V-angle, dual overhead camshafts (DOHC) with continuously variable valve timing (CVTCS) on both intake and exhaust valves, and a multi-port fuel injection system. The engine produced 309 horsepower at 6800 rpm and 261 lb-ft of torque at 4800 rpm. The five-speed automatic transmission, while not as sporty as the available six-speed manual, was tuned for smooth shifts and responsive acceleration. It featured adaptive shift control, adjusting shift points based on driving conditions and throttle input.
Driving Characteristics
The 3.5i X AWD offered a comfortable and capable driving experience. The all-wheel-drive system provided enhanced traction, particularly in inclement weather, making it a practical choice for regions with snow or rain. While the automatic transmission wasn’t as engaging as the manual, it delivered adequate performance for everyday driving and highway cruising. Acceleration from 0 to 60 mph was typically in the mid-5 second range. Compared to the manual transmission version, the automatic offered slightly slower acceleration, but a more relaxed driving experience. The air suspension on the rear provided a comfortable ride, absorbing bumps and irregularities in the road surface effectively. However, some reviewers noted that the suspension could feel a bit soft in spirited driving situations.
Equipment & Trim Levels
The 3.5i X AWD trim was well-equipped, offering a range of standard features. These included leather upholstery, power-adjustable front seats with memory function, a Bose premium sound system, a sunroof, automatic climate control, and a navigation system. Optional extras included a rear spoiler, upgraded wheels, and metallic paint finishes. The interior design was generally considered upscale and modern for its time, with a focus on ergonomics and driver comfort. The dashboard layout was clean and intuitive, with easy-to-read gauges and well-placed controls.
Chassis & Braking
The G35 Sedan utilized a robust chassis with independent suspension all around. The front suspension employed a McPherson strut design with coil springs and an anti-roll bar, while the rear featured an air suspension system. This combination provided a good balance between ride comfort and handling. Braking duties were handled by four-wheel disc brakes with Anti-lock Braking System (ABS). The brakes were generally considered effective, providing ample stopping power and good pedal feel. The 225/55 R17 tires offered a good compromise between grip and ride comfort.
Market Reception & Comparison
The Infiniti G35 Sedan 3.5i X AWD was generally well-received by automotive critics. It was praised for its powerful engine, comfortable ride, and well-appointed interior. However, some reviewers criticized the automatic transmission for being less engaging than the manual and the somewhat soft suspension for not providing the most sporty handling experience. Compared to other trims in the G35 lineup, the 3.5i X AWD offered a more practical and all-weather-capable alternative to the rear-wheel-drive models. Fuel economy was typical for a V6-powered luxury sedan of its time, averaging around 19 mpg in the city and 25 mpg on the highway.
Legacy
The VQ35HR engine proved to be exceptionally reliable, and many G35 Sedans continue to operate reliably with proper maintenance. The automatic transmission, while not without its occasional issues, is generally considered durable. In the used car market, the G35 Sedan 3.5i X AWD remains a popular choice for buyers seeking a comfortable, well-equipped, and relatively affordable luxury sport sedan. Its all-wheel-drive system adds to its appeal in regions with challenging weather conditions. The V36 G35 generation, and particularly the 3.5i X AWD variant, helped establish Infiniti as a credible competitor in the luxury car segment, paving the way for future models like the Q50.
