The GMC Terrain III 1.5L Turbo, introduced in August 2024, represents the latest iteration of GMC’s popular compact SUV. This variant, powered by a 1.5-liter turbocharged engine producing 177 horsepower and paired with a continuously variable transmission (CVT), occupies a key position in the Terrain lineup, offering a balance of fuel efficiency and adequate performance for everyday driving. It’s designed to appeal to buyers seeking a practical and comfortable SUV without the higher price tag of more powerful or feature-rich trims. The Terrain III builds upon the foundation of the previous generation, focusing on refined styling, updated technology, and improved interior comfort.
Technical Specifications
| Brand | GMC |
| Model | Terrain |
| Generation | Terrain III |
| Type (Engine) | 1.5L Turbo (177 Hp) CVT |
| Start of production | August, 2024 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 8.8 kg/Hp, 113.2 Hp/tonne |
| Weight-to-torque ratio | 6.3 kg/Nm, 159.9 Nm/tonne |
| Power | 177 Hp @ 5600 rpm |
| Power per litre | 118.8 Hp/l |
| Torque | 250 Nm @ 2000-4800 rpm, 184.39 lb.-ft. @ 2000-4800 rpm |
| Engine layout | Front, Transverse |
| Engine Model/Code | LYX |
| Engine displacement | 1490 cm3, 90.93 cu. in. |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 74 mm, 2.91 in. |
| Piston Stroke | 86.6 mm, 3.41 in. |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 5 l, 5.28 US qt | 4.4 UK qt |
| Coolant | 6.6 l, 6.97 US qt | 5.81 UK qt |
| Kerb Weight | 1563 kg, 3445.83 lbs. |
| Trunk (boot) space – minimum | 844 l, 29.81 cu. ft. |
| Trunk (boot) space – maximum | 1799 l, 63.53 cu. ft. |
| Permitted trailer load with brakes (12%) | 363 kg, 800.28 lbs. |
| Length | 4597 mm, 180.98 in. |
| Width | 1892 mm, 74.49 in. |
| Height | 1680 mm, 66.14 in. |
| Wheelbase | 2730 mm, 107.48 in. |
| Front track | 1626 mm, 64.02 in. |
| Rear (Back) track | 1628 mm, 64.09 in. |
| Ride height (ground clearance) | 205 mm, 8.07 in. |
| Minimum turning circle (turning diameter) | 11.3 m, 37.07 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 | automatic transmission CVT |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs, 300×26 mm |
| Rear brakes | Disc, 288×12 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 235/65 R17; 235/55 R19 |
| Wheel rims size | 17; 19 |
Powertrain & Engine Architecture
At the heart of the Terrain III 1.5L Turbo lies the LYX engine, a 1.5-liter inline-four cylinder gasoline engine. This engine utilizes direct fuel injection and a single turbocharger with an intercooler to boost power and efficiency. The direct injection system precisely meters fuel into the combustion chambers, optimizing combustion and reducing emissions. The DOHC (Dual Overhead Camshaft) valvetrain further enhances engine breathing and responsiveness. The engine’s Start & Stop System contributes to fuel savings by automatically shutting off the engine when the vehicle is stationary. The engine is transversely mounted, driving the front wheels. The CVT (Continuously Variable Transmission) is designed to provide smooth, seamless acceleration and optimized fuel economy by continuously adjusting the gear ratio to match driving conditions. Unlike traditional automatic transmissions with fixed gear ratios, a CVT offers an infinite number of ratios within its range.
Driving Characteristics
The 177-horsepower output and CVT pairing deliver adequate performance for typical commuting and highway driving. Acceleration is linear and predictable, though not particularly brisk. The CVT minimizes harsh shifts, providing a smooth driving experience, but can sometimes feel less engaging than a traditional automatic transmission, particularly during aggressive acceleration where the engine may “drone” at a constant RPM. Compared to higher-trim Terrain models equipped with more powerful engines, this 1.5L Turbo variant prioritizes fuel efficiency over outright performance. The CVT is tuned for economy, meaning it holds lower gears for longer to maximize fuel savings. The weight of the vehicle (1563 kg / 3445.83 lbs) does impact acceleration, making it feel less nimble than lighter competitors.
Equipment & Trim Levels
The 1.5L Turbo trim typically serves as the entry-level or mid-range offering in the Terrain III lineup. Standard features generally include air conditioning, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, keyless entry, and a suite of driver-assistance technologies such as automatic emergency braking and lane departure warning. Interior upholstery is typically cloth, with options for leather upgrades on higher sub-trims. Available optional extras often include a panoramic sunroof, heated seats, a premium audio system, and advanced driver-assistance features like adaptive cruise control. The dashboard layout is modern and functional, with a focus on ease of use.
Chassis & Braking
The Terrain III utilizes an independent McPherson strut suspension in the front and an independent multi-link suspension in the rear, providing a comfortable ride quality. The suspension is tuned to prioritize comfort over sporty handling. Front brakes are ventilated discs measuring 300x26mm, while rear brakes are solid discs measuring 288x12mm. ABS (Anti-lock Braking System) is standard. The electric power steering provides light and responsive steering feel. The vehicle’s ride height of 205mm (8.07 inches) provides adequate ground clearance for navigating various road conditions.
Market Reception & Comparison
The GMC Terrain III 1.5L Turbo has been generally well-received by critics as a practical and fuel-efficient compact SUV. Reviewers have praised its comfortable ride, spacious interior, and user-friendly technology. However, some have noted that the engine can feel underpowered, particularly when fully loaded or climbing hills. Compared to other trims in the Terrain lineup, the 1.5L Turbo offers the best fuel economy, making it an attractive option for budget-conscious buyers. Against competitors like the Honda CR-V and Toyota RAV4, the Terrain 1.5L Turbo offers a competitive price point and a generous amount of standard features, but may fall slightly behind in terms of overall refinement and performance.
Legacy
The LYX 1.5L Turbo engine and CVT combination, while relatively new to the Terrain lineup, is expected to offer good long-term reliability. GM has a track record of producing durable powertrains, and the direct injection and turbocharging technologies are now well-established. Early reports from the used car market suggest that the Terrain III is holding its value reasonably well. The CVT, if properly maintained with regular fluid changes, is generally considered a reliable transmission. However, as with any modern vehicle, regular maintenance and adherence to the manufacturer’s recommended service intervals are crucial for ensuring long-term reliability.
