The Hyundai i40 Sedan (facelift, 2015) 1.6 GDI, producing 135 horsepower, represented a key offering in Hyundai’s mid-size sedan lineup. Introduced as part of the facelift for the TF series i40, this variant was marketed from 2015 to 2018. It aimed to provide a balance of fuel efficiency and reasonable performance for buyers seeking a comfortable and well-equipped family car. The i40, designed primarily for the European market, was Hyundai’s attempt to directly challenge established players like the Ford Mondeo, Volkswagen Passat, and Toyota Avensis. In the US market, Hyundai positioned the i40 (sold as the Sonata) as a value-oriented alternative to Japanese competitors, emphasizing features and warranty coverage.
Technical Specifications
| Brand | Hyundai |
| Model | i40 |
| Generation | i40 Sedan (facelift 2015) |
| Type (Engine) | 1.6 GDI (135 Hp) |
| Start of production | 2015 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 8.3-8.5 l/100 km (28.3 – 27.7 US mpg) |
| Fuel consumption (extra urban) | 5.2-5.5 l/100 km (45.2 – 42.8 US mpg) |
| Fuel consumption (combined) | 6.3-6.6 l/100 km (37.3 – 35.6 US mpg) |
| CO2 emissions | 147-153 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 11.5 sec |
| Acceleration 0 – 62 mph | 11.5 sec |
| Acceleration 0 – 60 mph | 10.9 sec |
| Maximum speed | 197 km/h (122.41 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 10.4 kg/Hp |
| Weight-to-torque ratio | 8.5 kg/Nm |
| Power | 135 Hp @ 6300 rpm |
| Torque | 164 Nm @ 4850 rpm (120.96 lb.-ft. @ 4850 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | G4FD |
| Engine displacement | 1591 cm3 (97.09 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 77 mm (3.03 in.) |
| Piston Stroke | 85.44 mm (3.36 in.) |
| Compression ratio | 11:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 3.3 l (3.49 US qt | 2.9 UK qt) |
| Coolant capacity | 6.8 l (7.19 US qt | 5.98 UK qt) |
| Kerb Weight | 1402 kg (3090.88 lbs.) |
| Max. weight | 1980 kg (4365.15 lbs.) |
| Max load | 578 kg (1274.27 lbs.) |
| Trunk (boot) space – minimum | 506 l (17.87 cu. ft.) |
| Trunk (boot) space – maximum | 1672 l (59.05 cu. ft.) |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Length | 4775 mm (187.99 in.) |
| Width | 1815 mm (71.46 in.) |
| Height | 1470 mm (57.87 in.) |
| Wheelbase | 2770 mm (109.06 in.) |
| Front track | 1591 mm (62.64 in.) |
| Rear track | 1597 mm (62.87 in.) |
| Ride height (ground clearance) | 140 mm (5.51 in.) |
| Minimum turning circle | 10.94 m (35.89 ft.) |
| Drivetrain Architecture | Front wheel drive |
| Drive wheel | Front wheel drive |
| Number of gears | 6 |
| Gearbox type | Manual transmission |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 205/60 R16; 215/50 R17; 225/45 R18 |
| Wheel rims size | 7.0J x 16; 7.5J x 17; 8.0J x 18 |
Powertrain & Engine Architecture
The heart of the i40 1.6 GDI was the Hyundai G4FD engine, a 1.6-liter inline-four cylinder gasoline engine. This engine featured direct fuel injection (GDI), a technology that improved fuel efficiency and power output compared to traditional port fuel injection systems. The G4FD utilized a dual continuously variable valve timing (D-CVVT) system, optimizing valve timing for both intake and exhaust to enhance performance across the rev range. The engine produced 135 horsepower at 6,300 rpm and 164 Nm (120.96 lb-ft) of torque at 4,850 rpm. The engine’s relatively high compression ratio of 11:1 contributed to its efficiency. The i40 1.6 GDI was typically paired with a six-speed manual transmission, although a six-speed automatic transmission was also available. The automatic transmission was designed to provide smooth shifts and contribute to overall fuel economy.
Driving Characteristics
The 1.6 GDI engine in the i40 provided adequate, but not exhilarating, performance. Acceleration from 0 to 60 mph took approximately 10.9 seconds, and the top speed was around 122.41 mph. Compared to the more powerful 1.7 CRDi diesel or the 2.0-liter gasoline variants, the 1.6 GDI felt less responsive, particularly during overtaking maneuvers. The six-speed manual transmission offered precise shifts, while the automatic transmission prioritized comfort and fuel efficiency over sporty driving. The gear ratios were tuned for relaxed cruising, making the i40 a comfortable long-distance companion. The engine’s torque curve was relatively flat, providing usable power throughout the mid-range, but it lacked the low-end grunt of a diesel engine.
Equipment & Trim Levels
The i40 1.6 GDI typically came with a respectable level of standard equipment. Base models included air conditioning, power windows, central locking, and a basic audio system. Higher trim levels added features such as alloy wheels, a touchscreen infotainment system with navigation, rear parking sensors, and a sunroof. Interior upholstery was typically cloth, with leather options available on higher trims. Safety features included ABS, electronic stability control, and multiple airbags. The i40 aimed to offer a premium feel at a competitive price point, and Hyundai focused on providing a comprehensive feature set to attract buyers.
Chassis & Braking
The i40 utilized a front-wheel-drive platform with independent suspension at all four corners. The front suspension employed a McPherson strut design, while the rear suspension featured a multi-link setup. This configuration provided a comfortable ride and decent handling characteristics. The i40 1.6 GDI was equipped with ventilated disc brakes at the front and solid disc brakes at the rear. ABS (Anti-lock Braking System) was standard, enhancing braking performance and safety. The steering was a rack-and-pinion system, providing precise and responsive steering feel.
Market Reception & Comparison
The Hyundai i40 1.6 GDI was generally well-received by automotive critics. It was praised for its comfortable ride, spacious interior, and generous equipment levels. However, some reviewers noted that the 1.6 GDI engine lacked the punch of its competitors, particularly the diesel options. Fuel economy was considered good, but not class-leading. Compared to the 1.7 CRDi diesel, the 1.6 GDI offered lower running costs but less torque and fuel efficiency. The 2.0-liter gasoline variant provided more power but at the expense of fuel economy. The i40 positioned itself as a strong value proposition, offering a compelling combination of features, comfort, and affordability.
Legacy
The Hyundai i40 1.6 GDI has proven to be a relatively reliable powertrain. The G4FD engine is known for its durability, and the six-speed transmissions are generally robust. Common issues are relatively minor, often related to routine maintenance items such as spark plugs and fuel injectors. On the used car market, the i40 1.6 GDI represents a good value for buyers seeking a comfortable and well-equipped mid-size sedan. Its affordability and relatively low running costs make it an attractive option for families and commuters. While it may not offer the most exciting driving experience, it provides a practical and dependable transportation solution.
