The Kia K9, launched in 2012 and receiving a significant facelift in November 2014, represented Kia’s ambitious foray into the luxury sedan segment. The 2014 facelift, produced through April 2018, aimed to elevate the K9’s appeal with revised styling and enhanced features. This particular variant, the 5.0 GDI V8 with an eight-speed automatic transmission, served as the flagship model, offering the highest level of performance and luxury within the K9 lineup. Positioned as a direct competitor to established luxury brands like Lexus and Acura, the K9 sought to provide a compelling combination of value, features, and a long warranty. While not a massive sales success in the United States, the K9 was a significant vehicle for Kia, demonstrating their growing engineering capabilities and design maturity.
Technical Specifications
| Brand | Kia |
| Model | K9 |
| Generation | K9 I (facelift 2014) |
| Type (Engine) | 5.0 GDI V8 (420 Hp) Automatic |
| Start of production | November, 2014 |
| End of production | April, 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – urban | 15.7 l/100 km (15 US mpg, 18 UK mpg, 6.4 km/l) |
| Fuel consumption (economy) – extra urban | 10.2 l/100 km (23.1 US mpg, 27.7 UK mpg, 9.8 km/l) |
| Fuel consumption (economy) – combined | 13.1 l/100 km (18 US mpg, 21.6 UK mpg, 7.6 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 5 kg/Hp, 200.9 Hp/tonne |
| Weight-to-torque ratio | 4.1 kg/Nm, 243.9 Nm/tonne |
| Power | 420 Hp @ 6400 rpm |
| Power per litre | 83.4 Hp/l |
| Torque | 510 Nm @ 5000 rpm (376.16 lb.-ft. @ 5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | G8BE |
| Engine displacement | 5038 cm3 (307.44 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 96 mm (3.78 in.) |
| Piston Stroke | 87 mm (3.43 in.) |
| Compression ratio | 11.5:1 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 7.2 l (7.61 US qt | 6.34 UK qt) |
| Coolant | 8.4 l (8.88 US qt | 7.39 UK qt) |
| Kerb Weight | 2091 kg (4609.87 lbs.) |
| Max. weight | 2550 kg (5621.79 lbs.) |
| Max load | 459 kg (1011.92 lbs.) |
| Trunk (boot) space – minimum | 450 l (15.89 cu. ft.) |
| Fuel tank capacity | 75 l (19.81 US gal | 16.5 UK gal) |
| Length | 5095 mm (200.59 in.) |
| Width | 1900 mm (74.8 in.) |
| Height | 1486 mm (58.5 in.) |
| Wheelbase | 3045 mm (119.88 in.) |
| Front track | 1620 mm (63.78 in.) |
| Rear (Back) track | 1627 mm (64.06 in.) |
| Front overhang | 879 mm (34.61 in.) |
| Rear overhang | 1171 mm (46.1 in.) |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 8 gears, automatic transmission |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | Front wheel tires: 245/45 R19 Rear wheel tires: 275/40 R19 |
| Wheel rims size | Front wheel rims: 8.0J x 19 Rear wheel rims: 9.0J x 19 |
Powertrain & Engine Architecture
The heart of this K9 variant is the 5.0-liter GDI (Gasoline Direct Injection) V8 engine, designated the G8BE. This naturally aspirated engine produces 420 horsepower at 6400 rpm and 376 lb-ft of torque at 5000 rpm. The GDI system delivers fuel directly into the combustion chamber, improving efficiency and power output compared to traditional port fuel injection. The engine features a double overhead camshaft (DOHC) valvetrain, optimizing airflow for enhanced performance. Paired with the engine is a smooth-shifting eight-speed automatic transmission, providing responsive acceleration and comfortable cruising. This transmission was sourced from ZF, a well-respected supplier of automotive transmissions. The longitudinal engine layout and rear-wheel-drive configuration contribute to a balanced driving experience.
Driving Characteristics
The 5.0L V8 K9 delivers a refined and powerful driving experience. Acceleration is brisk, with the engine providing ample torque throughout the rev range. The eight-speed automatic transmission is well-tuned, offering smooth gear changes and quick downshifts when needed. While not a sports sedan, the K9 offers confident handling and a comfortable ride, thanks to its independent multi-link suspension at all four corners. Compared to the base 3.8L V6 model, the V8 provides a significant performance upgrade, offering a more luxurious and engaging driving experience. The V8 also feels more composed at highway speeds, with greater reserves of power for overtaking. Fuel economy, however, is considerably lower than the V6, reflecting the larger engine’s increased consumption.
Equipment & Trim Levels
The 5.0 GDI V8 was typically the highest trim level available for the K9. Standard features included leather upholstery, heated and ventilated front seats, a premium audio system (often Lexicon branded), a large touchscreen infotainment system, navigation, a rearview camera, and a suite of advanced safety features such as blind-spot monitoring, lane departure warning, and adaptive cruise control. Optional extras included a panoramic sunroof, rear-seat entertainment, and upgraded interior trim materials. The interior design focused on providing a luxurious and comfortable environment, with attention paid to detail and material quality.
Chassis & Braking
The K9’s chassis is built on a robust rear-wheel-drive platform, providing a stable and comfortable ride. The suspension utilizes independent multi-link setups front and rear, tuned for a balance between comfort and handling. Braking duties are handled by ventilated discs at all four corners, providing ample stopping power. An Anti-lock Braking System (ABS) is standard, enhancing safety and control during emergency braking situations. The K9’s steering is electrically assisted, offering a light and precise feel.
Market Reception & Comparison
The Kia K9, particularly the 5.0 GDI V8 variant, received generally positive reviews from automotive critics. Praise was given for its luxurious interior, smooth ride, and powerful engine. However, it was often criticized for its relatively unknown brand status and its lack of brand recognition compared to established luxury competitors. Fuel economy was also a common concern, given the V8 engine’s large displacement. Compared to rivals like the Lexus LS and Acura RLX, the K9 offered a compelling value proposition, providing similar levels of luxury and features at a lower price point. However, it struggled to gain significant market share due to its limited marketing presence and the strong brand loyalty of its competitors.
Legacy
The Kia K9, while not a mainstream success, played a crucial role in Kia’s brand evolution. It demonstrated the company’s ability to produce a genuinely luxurious and technologically advanced sedan. The 5.0 GDI V8 powertrain, while relatively complex, has proven to be reasonably reliable in long-term ownership, provided it receives regular maintenance. On the used car market, the K9 V8 represents a unique opportunity to acquire a well-equipped luxury sedan at a significantly lower price than its European and Japanese rivals. Its relative rarity and distinctive styling have also begun to attract a small but dedicated following among enthusiasts.
