The Puma AM4 1.8, producing 90 horsepower, was a variant of the Brazilian-built Puma roadster manufactured between 1989 and 1995. Positioned as an entry-level offering within the AM4 range, it provided an accessible pathway into open-top motoring for Brazilian consumers. The AM4 itself was a significant vehicle for Puma, representing a continuation of sports car production in Brazil following the discontinuation of the Volkswagen Karmann-Ghia. It utilized a relatively simple, rear-wheel-drive layout and was based on a steel space frame chassis, offering a classic roadster experience. This particular 1.8-liter, 90 hp version, typically paired with a four-speed manual transmission (though an automatic was available), aimed for a balance between affordability and driving enjoyment.
Technical Specifications
| Brand | Puma |
| Model | AM4 |
| Generation | AM4 |
| Type (Engine) | 1.8 (90 Hp) |
| Start of production | 1989 |
| End of production | 1995 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 2 |
| Doors | 2 |
| Fuel consumption (urban) | 14 l/100 km (16.8 US mpg, 20.2 UK mpg, 7.1 km/l) |
| Fuel consumption (extra urban) | 8 l/100 km (29.4 US mpg, 35.3 UK mpg, 12.5 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Maximum speed | 165 km/h (102.53 mph) |
| Weight-to-power ratio | 10.1 kg/Hp, 99.4 Hp/tonne |
| Weight-to-torque ratio | 6.3 kg/Nm, 159.1 Nm/tonne |
| Power | 90 Hp @ 5200 rpm |
| Power per litre | 50.5 Hp/l |
| Torque | 144 Nm @ 3400 rpm (106.21 lb.-ft. @ 3400 rpm) |
| Engine displacement | 1781 cm3 (108.68 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 81 mm (3.19 in.) |
| Piston Stroke | 86.4 mm (3.4 in.) |
| Compression ratio | 8.5:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Carburettor |
| Engine aspiration | Naturally aspirated engine |
| Kerb Weight | 905 kg (1995.18 lbs.) |
| Fuel tank capacity | 45 l (11.89 US gal | 9.9 UK gal) |
| Length | 4000 mm (157.48 in.) |
| Width | 1670 mm (65.75 in.) |
| Height | 1200 mm (47.24 in.) |
| Wheelbase | 2150 mm (84.65 in.) |
| Front track | 1370 mm (53.94 in.) |
| Rear track | 1370 mm (53.94 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 4 gears, manual transmission |
| Front suspension | Coil spring |
| Rear suspension | Coil spring |
| Front brakes | Disc |
| Rear brakes | Drum |
| Assisting systems | ABS (Anti-lock braking system) |
| Tires size | 195/60 R14 |
| Wheel rims size | 14 |
Powertrain & Engine Architecture
The heart of the Puma AM4 1.8 (90 hp) was the Volkswagen-derived 1781 cc inline-four cylinder engine. While sharing lineage with VW’s Type D engines, the Puma version was adapted for Brazilian production and fuel availability. Crucially, this engine utilized a carburetor fuel system, a cost-saving measure common in Brazilian automotive manufacturing during this period. The engine featured a two-valve-per-cylinder configuration and a compression ratio of 8.5:1. The 90 horsepower output was achieved at 5200 rpm, with peak torque of 144 Nm (106.21 lb-ft) arriving at 3400 rpm. The four-speed manual transmission was the most common pairing, though a three-speed automatic transmission was offered as an option. The automatic, while providing convenience, noticeably impacted acceleration and fuel economy.
Driving Characteristics
The 1.8-liter, 90 hp Puma AM4 offered a relatively relaxed driving experience. Acceleration was adequate for everyday driving, but it wasn’t a particularly quick car. The four-speed gearbox, when equipped, provided reasonable spacing, but the lack of a fifth gear meant engine speeds were higher at highway cruising speeds. Compared to the more powerful versions of the AM4 (which sometimes featured engines sourced from VW’s AP series), the 1.8 felt less responsive. The automatic transmission further dulled performance, making the car feel sluggish during overtaking maneuvers. However, the rear-wheel-drive layout and relatively light weight (905 kg / 1995 lbs) contributed to a balanced and predictable handling characteristic. The suspension, while simple, provided a comfortable ride on most road surfaces.
Equipment & Trim Levels
The AM4 1.8 was generally equipped with basic amenities. Standard features typically included cloth upholstery, a simple dashboard layout with analog gauges, and a basic stereo system. Power steering was not standard on all models, and air conditioning was often an optional extra. The interior was functional rather than luxurious, reflecting the car’s positioning as an affordable sports car. Exterior features included steel wheels with hubcaps, and a manually operated convertible top. Optional extras could include alloy wheels, upgraded stereo systems, and different exterior color options.
Chassis & Braking
The Puma AM4 utilized a steel space frame chassis, providing a solid foundation for the bodywork. Suspension consisted of coil springs and shock absorbers all around. The front brakes were discs, while the rear brakes were drums – a common configuration for cars in this price range during the 1980s and 1990s. Anti-lock brakes (ABS) were available as an option, enhancing safety. The relatively simple suspension setup prioritized ride comfort over outright handling performance. The 195/60 R14 tires provided adequate grip for everyday driving.
Market Reception & Comparison
The Puma AM4 1.8 was generally well-received in Brazil as an affordable and stylish roadster. Critics praised its classic design and engaging driving experience, but noted the engine’s lack of outright power. Compared to the higher-spec AM4 variants, the 1.8 offered a more accessible price point, making it attractive to a wider range of buyers. However, the automatic transmission version was often criticized for its sluggish performance and reduced fuel economy. The 1.8L version was often seen as a good entry point into the AM4 range, offering the style and open-air experience without the higher cost of the more powerful engines.
Legacy
The Puma AM4, including the 1.8-liter variant, holds a special place in Brazilian automotive history. It represented a continuation of sports car production in a market that often favored more practical vehicles. The 1.8-liter engine, while not particularly sophisticated, proved to be relatively reliable and durable. Today, the AM4 is a sought-after classic car in Brazil, with well-maintained examples commanding respectable prices. The 1.8-liter version, while not the most powerful, remains a popular choice among enthusiasts due to its affordability and simplicity. Parts availability can be a challenge, but a dedicated community of Puma owners and restorers helps to keep these cars on the road.
