The Nissan Frontier II King Cab (D40), produced from 2005 to 2009, represented Nissan’s second-generation entry into the mid-size pickup truck market. Specifically, the 2.5-liter (154 hp) automatic variant was positioned as a more accessible, fuel-conscious option within the D40 lineup, catering to buyers who prioritized everyday usability over outright towing capacity or off-road prowess. This model was primarily sold in markets outside of North America, where the Frontier nameplate was reserved for a different vehicle (the Navara). The D40 aimed to bridge the gap between compact and full-size trucks, offering a versatile package for both commercial and personal use.
Technical Specifications
| Brand | Nissan |
| Model | Frontier |
| Generation | Frontier II King Cab (D40) |
| Type (Engine) | 2.5 (154 Hp) Automatic |
| Start of production | 2005 |
| End of production | 2009 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5 |
| Doors | 2 |
| Fuel consumption (urban) | 13.8 l/100 km (17 US mpg, 20.5 UK mpg) |
| Fuel consumption (extra urban) | 10.6 l/100 km (22.2 US mpg, 26.6 UK mpg) |
| Fuel Type | Petrol (Gasoline) |
| Power | 154 Hp @ 5200 rpm |
| Power per litre | 61.9 Hp/l |
| Torque | 231 Nm @ 4400 rpm (170.38 lb.-ft. @ 4400 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | QR25DE |
| Engine displacement | 2488 cm3 (151.83 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 89 mm (3.5 in.) |
| Piston Stroke | 100 mm (3.94 in.) |
| 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 | 9.4 l (9.93 US qt | 8.27 UK qt) |
| Fuel tank capacity | 80 l (21.13 US gal | 17.6 UK gal) |
| Length | 5220 mm (205.51 in.) |
| Width | 1850 mm (72.83 in.) |
| Height | 1879 mm (73.98 in.) |
| Wheelbase | 3200 mm (125.98 in.) |
| Front track | 1225 mm (48.23 in.) |
| Rear track | 1570 mm (61.81 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 5 |
| Gearbox type | Automatic transmission |
| Front suspension | Double wishbone |
| Rear suspension | Leaf spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 235/75 R15; 265/70 R16; 265/75 R16; 265/65 R17 |
| Wheel rims size | 7.0J x 15; 7.0J x 16; 7.5J x 17 |
Powertrain & Engine Architecture
The heart of this Frontier variant is the QR25DE, a 2.5-liter inline-four cylinder gasoline engine. This engine utilizes a cast iron block with an aluminum cylinder head, a common configuration for balancing durability and weight. The QR25DE employs multi-port fuel injection, delivering fuel directly into the intake ports, and a double overhead camshaft (DOHC) valvetrain for improved breathing and efficiency. The engine’s 154 horsepower and 231 Nm (170 lb-ft) of torque are respectable for its displacement, but are intentionally tuned for fuel economy and smooth operation rather than peak performance. Paired with a 5-speed automatic transmission, the powertrain prioritizes ease of use and comfortable cruising. The automatic transmission was a standard Jatco unit, known for its reliability, but not particularly sporty shift characteristics.
Driving Characteristics
The 2.5-liter automatic Frontier delivers a predictable and generally unexciting driving experience. Acceleration is adequate for everyday driving, but noticeably slower than the higher-output engine options available in the D40 range (such as the 2.8-liter diesel). The automatic transmission contributes to a smooth ride, but can feel somewhat sluggish when downshifting or attempting quick overtaking maneuvers. The gear ratios are optimized for fuel efficiency, meaning the engine often operates at lower RPMs during highway cruising. Compared to the manual transmission versions of the 2.5, the automatic sacrifices some responsiveness for convenience. The rear-wheel-drive configuration provides a traditional truck feel, but lacks the all-weather capability of four-wheel-drive models.
Equipment & Trim Levels
The 2.5-liter automatic Frontier typically came with a base level of equipment, focusing on essential features. Standard amenities generally included air conditioning, power steering, a basic audio system (often with AM/FM radio and CD player), and manually adjustable windows and locks. Interior upholstery was typically vinyl or a durable cloth material. Optional extras could include alloy wheels, upgraded audio systems, power windows and locks, and a limited-slip differential. Trim levels varied by market, but the 2.5 automatic generally represented the entry point into the King Cab range.
Chassis & Braking
The D40 Frontier utilized a body-on-frame construction, providing a robust and durable platform. The front suspension employed a double wishbone setup, offering a reasonable balance of ride comfort and handling. The rear suspension utilized leaf springs, a traditional design for pickup trucks, prioritizing load-carrying capacity. Braking duties were handled by ventilated discs at the front and solid discs at the rear. Anti-lock Braking System (ABS) was standard, enhancing safety during emergency braking situations. The steering system was a rack and pinion setup, providing precise and responsive steering feel.
Market Reception & Comparison
The 2.5-liter automatic Frontier was generally well-received as a practical and affordable pickup truck option. Critics noted its fuel efficiency and comfortable ride, but also pointed out its lack of outright performance compared to other trims. Compared to the 2.8-liter diesel versions, the 2.5 gasoline engine offered lower torque and fuel economy, but a lower purchase price. Against competitors like the Toyota Hilux and Mitsubishi Triton, the Frontier offered a competitive package in terms of price and features, but often lagged behind in terms of brand reputation and perceived reliability in some markets.
Legacy
The QR25DE engine, in general, has proven to be a relatively reliable powerplant when properly maintained. Common issues include occasional oil leaks and potential for timing chain wear at high mileage. The Jatco automatic transmission is also generally durable, but requires regular fluid changes to prevent issues. In the used car market, the 2.5-liter automatic Frontier represents an affordable entry point into the mid-size pickup truck segment. While it may not offer the performance or features of higher-end trims, its simplicity and reliability make it a viable option for buyers seeking a practical and dependable workhorse.
