The Hyundai Tucson IV 1.6 T-GDI (180 hp) Mild Hybrid, produced from December 2020 to October 2023, represents a significant offering within the fourth generation (NX4) Tucson lineup. Positioned as a mid-range option, this variant blended fuel efficiency with respectable performance, appealing to buyers seeking a practical and modern compact SUV. It was a key model in Hyundai’s push towards electrification, utilizing a 48-volt mild hybrid system to enhance fuel economy and reduce emissions. The Tucson IV, overall, marked a substantial design departure for the model, adopting a bolder, more angular aesthetic and a more spacious interior.
Technical Specifications
| Brand | Hyundai |
| Model | Tucson |
| Generation | Tucson IV |
| Type (Engine) | 1.6 T-GDI (180 Hp) Mild Hybrid |
| Start of production | December, 2020 |
| End of production | October, 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 6 l/100 km (39.2 US mpg, 47.1 UK mpg, 16.7 km/l) |
| Fuel consumption (extra urban) | 5.2 l/100 km (45.2 US mpg, 54.3 UK mpg, 19.2 km/l) |
| Fuel consumption (combined) | 5.8 l/100 km (40.6 US mpg, 48.7 UK mpg, 17.2 km/l) |
| CO2 emissions | 133 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9.4 sec |
| Acceleration 0 – 62 mph | 9.4 sec |
| Acceleration 0 – 60 mph | 8.9 sec |
| Maximum speed | 205 km/h (127.38 mph) |
| Emission standard | Euro 6d |
| Weight-to-power ratio | 8.1 kg/Hp |
| Weight-to-torque ratio | 5.5 kg/Nm |
| Gross battery capacity | 0.44 kWh |
| Power | 180 Hp @ 5500 rpm |
| Torque | 265 Nm @ 1500-4500 rpm (195.45 lb.-ft. @ 1500-4500 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | G4FU |
| Engine displacement | 1598 cm3 (97.52 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 75.6 mm (2.98 in.) |
| Piston Stroke | 89 mm (3.5 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-Turbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 4.8 l (5.07 US qt | 4.22 UK qt) |
| Coolant capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Kerb Weight | 1463-1588 kg (3225.36 – 3500.94 lbs.) |
| Max. weight | 2065 kg (4552.55 lbs.) |
| Max load | 477-602 kg (1051.6 – 1327.18 lbs.) |
| Trunk (boot) space – minimum | 577 l (20.38 cu. ft.) |
| Trunk (boot) space – maximum | 1756 l (62.01 cu. ft.) |
| Fuel tank capacity | 54 l (14.27 US gal | 11.88 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 1650 kg (3637.63 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 100 kg (220.46 lbs.) |
| Length | 4500 mm (177.17 in.) |
| Width | 1865 mm (73.43 in.) |
| Width including mirrors | 2130 mm (83.86 in.) |
| Height | 1651 mm (65 in.) |
| Wheelbase | 2680 mm (105.51 in.) |
| Front track | 1615-1630 mm (63.58 – 64.17 in.) |
| Rear (Back) track | 1622-1637 mm (63.86 – 64.45 in.) |
| Front overhang | 895 mm (35.24 in.) |
| Rear overhang | 925 mm (36.42 in.) |
| Ride height (ground clearance) | 170 mm (6.69 in.) |
| Drag coefficient (Cd) | 0.315 |
| Minimum turning circle | 10.92 m (35.83 ft.) |
| Approach angle | 17.4° |
| Departure angle | 25.7° |
| Ramp-over angle | 17.3° |
| Drivetrain Architecture | ICE and electric motor drive the front wheels |
| Drive wheel | Front wheel drive |
| Number of gears | 6 |
| Type of gearbox | Manual transmission |
| Front suspension | Independent, McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link with stabilizer |
| Front brakes | Ventilated discs, 291 mm |
| Rear brakes | Disc, 302 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric |
| Tires size | 215/65 R17; 235/55 R18; 235/50 R19 |
| Wheel rims size | 7.0J x 17; 7.5J x 18; 7.5J x 19 |
INTRODUCTION
The Hyundai Tucson IV 1.6 T-GDI Mild Hybrid, launched in December 2020, was a key component of Hyundai’s strategy to offer a wider range of electrified options within its popular Tucson lineup. Built on the N3 platform (internally designated as NX4), this variant aimed to provide a balance between fuel efficiency, performance, and affordability. It occupied a middle ground in the Tucson IV range, slotting between the base engine options and the more powerful gasoline and hybrid variants. The introduction of the mild hybrid system was a significant step for Hyundai, demonstrating its commitment to reducing emissions and improving fuel economy.
Powertrain & Engine Architecture
At the heart of this Tucson variant lies the G4FU 1.6-liter turbocharged gasoline engine. This engine is a member of Hyundai-Kia’s “Smartstream” engine family, known for its efficiency and responsiveness. The G4FU utilizes direct injection and a twin-scroll turbocharger to deliver 180 horsepower at 5500 rpm and 265 Nm (195 lb-ft) of torque between 1500 and 4500 rpm. The mild hybrid system consists of a 48V battery and a belt-driven starter generator (BSG). The BSG allows for features like extended start-stop operation, regenerative braking (capturing energy during deceleration), and a slight power assist during acceleration. The engine employs a DOHC (Double Overhead Camshaft) valvetrain and a compression ratio of 10.5:1. The 6-speed manual transmission was standard, offering a relatively direct driving experience.
Driving Characteristics
The 1.6 T-GDI Mild Hybrid Tucson delivers a competent, if not particularly exhilarating, driving experience. The 180 hp output provides adequate power for everyday driving situations, with the turbocharger providing a noticeable boost in acceleration. The mild hybrid system contributes to smoother starts and improved responsiveness at lower speeds. While the manual transmission offers more driver engagement than an automatic, the gear ratios are tuned for fuel efficiency rather than outright performance. Compared to the higher-output gasoline engines or the full hybrid variants, this version feels less powerful, especially when fully loaded or tackling steep inclines. However, the lower weight compared to some of the more equipped trims helps to mitigate this somewhat.
Equipment & Trim Levels
The 1.6 T-GDI Mild Hybrid was typically offered in SE, SEL, and Limited trim levels. Standard equipment on the base SE trim included features like an 8-inch touchscreen infotainment system with Apple CarPlay and Android Auto, lane keeping assist, forward collision avoidance assist, and automatic emergency braking. The SEL trim added features such as heated front seats, a power driver’s seat, and a larger 10.25-inch touchscreen. The Limited trim offered premium features like leather upholstery, a panoramic sunroof, and a premium sound system. Optional extras included adaptive cruise control, blind-spot monitoring, and a hands-free power liftgate.
Chassis & Braking
The Tucson IV utilizes a fully independent suspension system, with a McPherson strut setup at the front and a multi-link setup at the rear. This configuration provides a comfortable ride quality and decent handling characteristics. Stabilizer bars are fitted to both axles to reduce body roll during cornering. Braking duties are handled by ventilated discs at the front and solid discs at the rear. The ABS (Anti-lock Braking System) is standard, providing enhanced braking performance and stability. The steering is an electrically assisted rack and pinion system, offering a light and precise feel.
Market Reception & Comparison
The Hyundai Tucson IV 1.6 T-GDI Mild Hybrid was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and well-equipped interior. However, some reviewers noted that the engine could feel strained under heavy acceleration, and the manual transmission wasn’t as refined as some of its competitors. Compared to the 2.5-liter gasoline engine option, the 1.6 T-GDI offered better fuel economy but less overall power. Against the full hybrid variants, it provided a more affordable entry point but lacked the significant fuel savings and electric-only driving capability.
Legacy
The Hyundai Tucson IV 1.6 T-GDI Mild Hybrid has proven to be a reliable and practical choice in the used car market. The G4FU engine, while not without its minor quirks, has generally demonstrated good long-term durability. The mild hybrid system has also proven to be relatively trouble-free. As of 2024, these models represent a good value proposition for buyers seeking a fuel-efficient and well-equipped compact SUV. Regular maintenance, including oil changes and adherence to the manufacturer’s recommended service intervals, is crucial for ensuring the continued reliability of this powertrain.
