The Oldsmobile Cutlass Supreme 3.1 V6, produced from 1988 to 1997, represented a significant iteration of the long-running Cutlass Supreme line. This variant, powered by the 3.1-liter V6 engine paired with a four-speed automatic transmission, occupied a middle ground within the Cutlass Supreme range, offering a balance between affordability, comfort, and reasonable performance. It was a mainstay of Oldsmobile’s lineup during a period of transition for General Motors, appealing to buyers seeking a spacious, American-made sedan. The Cutlass Supreme, throughout its various generations, was consistently a strong seller, and the 3.1L V6 automatic configuration was a popular choice for those prioritizing ease of driving over outright sportiness.
Technical Specifications
| Brand | Oldsmobile |
| Model | Cutlass |
| Generation | Cutlass Supreme |
| Type (Engine) | 3.1 V6 (141 Hp) |
| Start of production | 1988 |
| End of production | 1997 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 16 l/100 km (14.7 US mpg, 17.7 UK mpg, 6.3 km/l) |
| Fuel consumption (extra urban) | 9 l/100 km (26.1 US mpg, 31.4 UK mpg, 11.1 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Maximum speed | 185 km/h (114.95 mph) |
| Weight-to-power ratio | 10.3 kg/Hp (97.2 Hp/tonne) |
| Weight-to-torque ratio | 5.8 kg/Nm (173.1 Nm/tonne) |
| Power | 141 Hp @ 4400 rpm |
| Power per litre | 45 Hp/l |
| Torque | 251 Nm @ 3200 rpm (185.13 lb.-ft. @ 3200 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | LH0 |
| Engine displacement | 3135 cm3 (191.31 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 89 mm (3.5 in.) |
| Piston Stroke | 84 mm (3.31 in.) |
| Compression ratio | 8.8:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHC |
| Engine oil capacity | 4.8 l (5.07 US qt | 4.22 UK qt) |
| Coolant | 11.8 l (12.47 US qt | 10.38 UK qt) |
| Kerb Weight | 1450 kg (3196.7 lbs.) |
| Trunk (boot) space – minimum | 440 l (15.54 cu. ft.) |
| Fuel tank capacity | 63 l (16.64 US gal | 13.86 UK gal) |
| Length | 4921 mm (193.74 in.) |
| Width | 1804 mm (71.02 in.) |
| Height | 1391 mm (54.76 in.) |
| Wheelbase | 2730 mm (107.48 in.) |
| Front track | 1512 mm (59.53 in.) |
| Rear (Back) track | 1475 mm (58.07 in.) |
| 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 | Coil spring |
| Rear suspension | Leaf spring |
| 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 | 195/70 R14 |
Powertrain & Engine Architecture
The heart of this Cutlass Supreme variant was the 3.1-liter (191 cubic inch) LH0 V6 engine. This engine, a member of General Motors’ “3100” family, was a 60-degree V6 featuring a cast iron block and aluminum cylinder heads. It utilized multi-port fuel injection, a significant upgrade over earlier carbureted engines, contributing to improved fuel efficiency and smoother operation. The engine employed a single overhead camshaft (OHC) design, operating two valves per cylinder. The 3.1L V6 produced 141 horsepower at 4400 rpm and 185 lb-ft of torque at 3200 rpm. This power was delivered to the front wheels through a four-speed automatic transmission, a common pairing for this trim level. The transmission was designed for smooth, comfortable shifts, prioritizing ease of use over aggressive performance.
Driving Characteristics
The 3.1L V6 automatic Cutlass Supreme offered a comfortable and predictable driving experience. Acceleration was adequate for everyday driving, but not particularly brisk. The automatic transmission, while smooth, lacked the responsiveness of a manual gearbox. The gear ratios were tuned for fuel economy and relaxed cruising, rather than spirited driving. Compared to the higher-output 3.4L V6 option, the 3.1L felt noticeably less powerful, especially when fully loaded or climbing hills. However, the 3.1L’s softer power delivery made it more forgiving for less experienced drivers. The front-wheel-drive configuration provided decent traction in most conditions, but lacked the handling precision of rear-wheel-drive vehicles.
Equipment & Trim Levels
The Cutlass Supreme 3.1L automatic typically came standard with features such as air conditioning, power steering, power brakes, and an AM/FM stereo. Cloth upholstery was standard, with optional upgrades to leather available. Common options included cruise control, power windows and locks, and a tilt steering wheel. Higher trim levels, such as the “SL” package, added features like upgraded sound systems, alloy wheels, and more luxurious interior appointments. The interior design was typical of late-1980s/early-1990s American cars – spacious and comfortable, but not particularly stylish or modern by today’s standards.
Chassis & Braking
The Cutlass Supreme utilized a front-wheel-drive chassis with an independent coil spring suspension in the front and a solid axle with leaf springs in the rear. This suspension setup prioritized ride comfort over handling precision. The front brakes were ventilated discs, while the rear brakes were discs. Anti-lock brakes (ABS) were often included as standard equipment, enhancing safety. The steering was a rack-and-pinion system with hydraulic power assist, providing relatively light and easy steering. The standard tire size was 195/70R14, offering a balance between ride comfort and handling.
Market Reception & Comparison
The Cutlass Supreme 3.1L automatic was generally well-received by consumers as a practical and affordable family sedan. Critics praised its spacious interior, comfortable ride, and reasonable fuel economy. However, it was often criticized for its lack of sporty handling and somewhat bland styling. Compared to the more powerful 3.4L V6 version, the 3.1L offered better fuel economy but significantly less performance. The 3.1L also proved to be a more reliable engine than some of the other options available in the Cutlass Supreme lineup, making it a popular choice for buyers seeking a dependable vehicle.
Legacy
The Oldsmobile Cutlass Supreme 3.1L V6 automatic, while not a performance icon, remains a relatively common sight on used car lots today. The 3.1L engine is known for its durability and relatively low maintenance costs. While age and mileage inevitably take their toll, many examples are still running and providing reliable transportation. The Cutlass Supreme, as a whole, represents a significant chapter in American automotive history, and the 3.1L V6 automatic variant embodies the practical, comfortable, and affordable values that defined the brand during its later years. Parts availability is generally good, making it a relatively easy vehicle to maintain and repair.
