The Hyundai Sonata IV (EF series), particularly the facelifted version introduced in 2001, represented a significant step forward for the South Korean automaker in the mid-size sedan segment. Produced from 2001 to 2004, the 2.7 V6 GLS Automatic variant occupied a premium position within the EF Sonata lineup, offering a blend of performance, comfort, and features aimed at buyers seeking a more refined driving experience. This model played a crucial role in establishing Hyundai’s reputation for value and reliability in the North American market, where the Sonata was increasingly seen as a viable alternative to established Japanese and American competitors.
Technical Specifications
| Brand | Hyundai |
| Model | Sonata |
| Generation | Sonata IV (EF, facelift 2001) |
| Type (Engine) | 2.7 V6 GLS (173 Hp) Automatic |
| Start of production | 2001 |
| End of production | 2004 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 14.7 l/100 km (16 US mpg, 19.2 UK mpg, 6.8 km/l) |
| Fuel consumption (extra urban) | 8.3 l/100 km (28.3 US mpg, 34 UK mpg, 12 km/l) |
| Fuel consumption (combined) | 10.7 l/100 km (22 US mpg, 26.4 UK mpg, 9.3 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9.7 sec |
| Acceleration 0 – 62 mph | 9.7 sec |
| Acceleration 0 – 60 mph | 9.2 sec |
| Maximum speed | 210 km/h (130.49 mph) |
| Emission standard | Euro 3 |
| Weight-to-power ratio | 8.4 kg/Hp, 119.7 Hp/tonne |
| Weight-to-torque ratio | 5.8 kg/Nm, 173 Nm/tonne |
| Power | 173 Hp @ 6000 rpm |
| Power per litre | 65.1 Hp/l |
| Torque | 250 Nm @ 4000 rpm (184.39 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Delta / G6BA |
| Engine displacement | 2656 cm3 (162.08 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 86.7 mm (3.41 in.) |
| Piston Stroke | 75 mm (2.95 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4.5 l (4.76 US qt | 3.96 UK qt) |
| Coolant capacity | 6 l (6.34 US qt | 5.28 UK qt) |
| Kerb Weight | 1445 kg (3185.68 lbs.) |
| Max. weight | 2020 kg (4453.34 lbs.) |
| Max load | 575 kg (1267.66 lbs.) |
| Trunk (boot) space – minimum | 430 l (15.19 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Length | 4747 mm (186.89 in.) |
| Width | 1820 mm (71.65 in.) |
| Height | 1422 mm (55.98 in.) |
| Wheelbase | 2700 mm (106.3 in.) |
| Front track | 1540 mm (60.63 in.) |
| Rear (Back) track | 1530 mm (60.24 in.) |
| Drag coefficient (Cd) | 0.32 |
| Minimum turning circle | 11.2 m (36.75 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 4 gears, automatic transmission |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| 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 | Hydraulic Steering |
| Tires size | 205/65 R15 |
| Wheel rims size | 15 |
Powertrain & Engine Architecture
The heart of the 2.7 V6 GLS was the Hyundai Delta engine, specifically the G6BA code. This 2.7-liter, naturally aspirated V6 engine featured a 60-degree V-angle and utilized a cast iron block with an aluminum cylinder head. The engine employed multi-port fuel injection (MPI) and a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, contributing to its respectable power output. The 173 horsepower and 250 Nm (184 lb-ft) of torque were delivered relatively smoothly throughout the rev range. Paired with a four-speed automatic transmission, the powertrain was designed for comfortable cruising and everyday usability rather than outright performance. The automatic transmission, while not offering the latest technology, was known for its durability and relatively smooth shifts.
Driving Characteristics
The 2.7 V6 Automatic Sonata offered a comfortable and predictable driving experience. Acceleration to 60 mph took around 9.2 seconds, which was adequate for the time but not particularly sporty. The automatic transmission’s gear ratios were tuned for fuel efficiency and smooth operation, resulting in a less engaging driving experience compared to the available five-speed manual transmission. However, the V6 engine provided sufficient power for highway merging and passing maneuvers. The suspension, tuned for comfort, absorbed bumps and road imperfections well, making it a pleasant vehicle for long journeys. Steering feel was light and precise, though lacking in feedback.
Equipment & Trim Levels
The GLS trim level represented a well-equipped version of the Sonata. Standard features typically included air conditioning, power windows and locks, a CD player, and cloth upholstery. Optional extras often included a sunroof, upgraded audio system, and leather upholstery. The interior design was functional and relatively spacious, offering comfortable seating for five adults. The facelifted 2001 model featured minor cosmetic updates to the interior, including revised dashboard trim and seat fabrics.
Chassis & Braking
The Sonata IV utilized a front-wheel-drive layout with an independent McPherson strut suspension in the front and an independent multi-link suspension in the rear. This suspension setup provided a good balance between ride comfort and handling. Braking duties were handled by ventilated disc brakes in the front and solid disc brakes in the rear. Anti-lock Braking System (ABS) was standard, enhancing safety and control during emergency braking situations. The chassis was designed for rigidity and crash safety, meeting contemporary safety standards.
Market Reception & Comparison
The 2.7 V6 GLS Automatic Sonata was generally well-received by critics and consumers alike. It was praised for its spacious interior, comfortable ride, and competitive price. However, some reviewers noted that the engine lacked the refinement and performance of some of its Japanese rivals. Compared to the base 2.4L four-cylinder models, the 2.7 V6 offered a significant performance upgrade, but at a higher price point. Against competitors like the Honda Accord and Toyota Camry, the Sonata offered a compelling value proposition, often undercutting them in price while providing similar levels of equipment. Fuel economy, at around 22 mpg combined, was average for the class.
Legacy
The Hyundai Sonata IV, and specifically the 2.7 V6 GLS Automatic variant, played a pivotal role in transforming Hyundai’s image in the US market. The Delta engine proved to be relatively reliable, and with proper maintenance, many examples are still on the road today. While not known for exceptional performance or cutting-edge technology, the 2.7 V6 Sonata offered a practical, comfortable, and affordable option for families seeking a mid-size sedan. In the used car market, these Sonatas are often sought after for their affordability and relatively low running costs, making them a popular choice for budget-conscious buyers.
