The 1991 Honda Civic hatchback specs depend on the trim: U.S. buyers could get a basic 70-horsepower hatchback, a 92-horsepower DX, or the sportier 108-horsepower Si. All three used front-wheel drive, but their engines, transmissions, curb weights, fuel economy and equipment differed.
Quick Answer
For the U.S. market, the 1991 Honda Civic hatchback came in base, DX, and Si forms. The base used a 70-hp 1.5-liter engine, the DX a 92-hp 1.5-liter, and the Si a 108-hp 1.6-liter. All were front-wheel drive, while weight and fuel economy varied by trim.
Figures are for the 1991 U.S.-market Civic hatchback; Canadian and other-market cars could differ in engine and equipment, so check the VIN and owner’s manual.
1991 Honda Civic Hatchback Specs: Engines
The 1991 Honda Civic hatchback used three main engine specifications in the U.S. market. The important distinction is that the 108-horsepower 1.6-liter belonged to the Si; the base and DX hatchbacks used lower-output 1.5-liter engines.
Honda’s D-series engines from this period were single-overhead-cam designs. MotorTrend’s D-series engine breakdown lists the D15B1 at 1,493 cc and 70 hp, the D15B2 at 1,493 cc and 92 hp, and the D16A6 at 1,590 cc and 108 hp.
| Trim | Engine | Horsepower | Torque | Manual transmission |
|---|---|---|---|---|
| Base hatchback | 1.5L SOHC four-cylinder | 70 hp @ 5,500 rpm | 83 lb-ft @ 3,000 rpm | 4-speed |
| DX hatchback | 1.5L SOHC four-cylinder | 92 hp @ 6,000 rpm | 89 lb-ft @ 4,500 rpm | 5-speed |
| Si hatchback | 1.6L SOHC four-cylinder | 108 hp @ 6,000 rpm | 100 lb-ft @ 5,000 rpm | 5-speed |
The Si’s engine is especially easy to misidentify because other fourth-generation Civics sold outside the U.S. could use twin-cam engines. The U.S.-market Civic Si, however, used the SOHC D16A6. It was naturally aspirated, used 16 valves, and sent its 108 hp through a five-speed manual transmission.
The 108-horsepower specification applies to the U.S. Civic Si hatchback, not to every 1991 Civic hatchback.
1991 Honda Civic Hatchback Performance and MPG
Performance and fuel economy depended heavily on trim. The lighter base model prioritized economy, while the Si traded some mileage for a stronger 1.6-liter engine and noticeably quicker acceleration.
For a useful period performance reference, Car and Driver tested a fourth-generation 1990 Civic Si with the same 108-hp power specification at 0–60 mph in 8.5 seconds and the quarter-mile in 16.5 seconds at 81 mph. Treat it as a guide rather than a result for every 1991 hatchback.
The fuel-economy figures also need to be separated by trim. The EPA maintains its original 1991 model-year Fuel Economy Guide data, while current vehicle-spec databases present the ratings in the familiar city/highway/combined format.
| Trim | City MPG | Highway MPG | Combined MPG |
|---|---|---|---|
| Base | 28 | 33 | 30 |
| DX | 27 | 32 | 29 |
| Si | 24 | 29 | 26 |
These figures show that fuel economy depends on the trim. The base hatchback is the economy leader, the DX sits in the middle, and the higher-output Si uses more fuel while delivering stronger performance.
1991 Honda Civic Hatchback Dimensions and Curb Weight
The main exterior dimensions were essentially shared across the U.S. hatchback trims. The meaningful difference is curb weight: equipment and powertrain changes made the Si about 157 pounds heavier than the basic hatchback.
| Specification | 1991 Civic Hatchback |
|---|---|
| Wheelbase | 98.4 in |
| Length | 157.1 in |
| Width | 66.3 in |
| Height | 52.5 in |
| Cargo capacity, seats in place | 16.9 cu ft |
| Fuel tank | 11.9 gal |
Curb weight was about 2,127 lbs for the base hatchback, 2,158 lbs for the DX, and 2,284 lbs for the Si. That low mass is a major reason the car can feel responsive even though its horsepower figures look modest by modern standards.
The hatchback’s short 157.1-inch body and 98.4-inch wheelbase also make it compact in traffic and easy to place on a narrow road. Cargo capacity with the rear seat in place is listed at 16.9 cubic feet.
1991 Honda Civic Hatchback Trim Features
The three U.S. hatchback trims follow a clear progression. The base car emphasizes low cost and efficiency, the DX adds power and equipment, and the Si combines the strongest engine with sport-oriented chassis and interior details.
Base Hatchback
The basic two-door hatchback used the 70-hp 1.5-liter engine with a four-speed manual transmission. At about 2,127 pounds, it was also the lightest of the three and carried the best listed fuel-economy figures.
DX Hatchback
The DX moved to a 92-hp 1.5-liter engine and a five-speed manual. At roughly 2,158 pounds, it kept most of the base car’s low-mass character while providing a useful increase in output.
Si Hatchback
The Si is the version most enthusiasts associate with the fourth-generation Civic hatchback. MotorTrend’s 1989–1991 Civic Si history confirms a 108-hp SOHC 1.6-liter engine, five-speed manual, tachometer, sunroof, front and rear anti-roll bars, sport seats, and 14-inch steel wheels with covers.
Air conditioning and fog lights were optional on the U.S. Si. MotorTrend also notes that the American Si did not offer an automatic transmission, which helps distinguish it from versions sold in some other markets.
1991 Honda Civic Hatchback History and Facts
The 1991 U.S. Civic hatchback belongs to Honda’s fourth-generation Civic family. Honda’s own Civic heritage summary dates the fourth generation to 1987–1991 and highlights two important engineering changes: four valves per cylinder across the range and double-wishbone suspension at both the front and rear.
That suspension design helps explain why the car’s reputation is not based only on fuel economy. A light body, compact wheelbase, front-wheel-drive layout, and independent suspension give the hatchback a direct, agile feel without requiring a large engine.
Honda identifies the fourth-generation Civic as the generation that brought double-wishbone suspension to both ends of the Civic.
The Si joined the fourth-generation U.S. Civic hatchback range after the generation’s initial launch and became the performance-oriented version. Its 108-hp D16A6 remained simple by modern standards, but the combination of low curb weight, manual transmission, and responsive chassis made the car engaging without excessive power.
For buyers today, trim identification matters. Engine swaps and other modifications are common on surviving fourth-generation Civics, so the equipment currently fitted to a car may not match its original factory specification.
For the modern car, see the 2026 Honda Civic Sport specs and the Civic interior guide; for another all-wheel-drive take, the Honda Civic all-wheel-drive specs. Other budget classics: Ford Escort wagon specs and Chevrolet Chevette hatchback specs.
Frequently Asked Questions
What engines did the 1991 Honda Civic hatchback have?
U.S. hatchbacks used three main engine specifications. The base car had a 70-hp 1.5-liter engine, the DX had a 92-hp 1.5-liter, and the Si had a 108-hp 1.6-liter D16A6. All were naturally aspirated four-cylinder engines driving the front wheels.
How much is a 1991 Honda Civic hatchback worth?
Value varies sharply by trim, originality, mileage, rust, modifications, and condition. For reference, the Hagerty price guide lists the collectible 1991 Civic Si separately, showing why a clean original Si can be worth much more than an ordinary high-mileage hatchback.
Is the 1991 Honda Civic Si SOHC or DOHC?
The U.S.-market 1991 Civic Si is SOHC, not DOHC. Its D16A6 is a 1.6-liter, 16-valve single-overhead-cam engine rated at 108 horsepower. Twin-cam Civic engines existed in other markets, which is one reason specifications are sometimes mixed together online.
What is the curb weight of a 1991 Honda Civic hatchback?
About 2,127 lb for the base car, 2,158 lb for the DX and 2,284 lb for the Si.
What MPG does a 1991 Honda Civic hatchback get?
Period ratings are about 28 city and 33 highway for the base car, 27/32 for the DX and 24/29 for the Si.
Conclusion
The key to understanding the 1991 Honda Civic hatchback is identifying the trim first. A base hatchback is a 70-hp, 2,127-pound economy car, while the Si uses a 108-hp SOHC 1.6-liter engine and weighs about 2,284 pounds. Once those differences are separated, the Civic’s specifications become much clearer and more consistent.
Sources
- Honda Global Civic Heritage: fourth-generation dates, four-valve engines, and double-wishbone suspension.
- MotorTrend D-Series Breakdown: D15B1, D15B2, and D16A6 displacement, valve configuration, and horsepower.
- Edmunds 1991 Civic Base Hatchback Specs: base engine, MPG, dimensions, capacities, and curb weight.
- Edmunds 1991 Civic DX Hatchback Specs: DX engine, MPG, dimensions, capacities, and curb weight.
- Edmunds 1991 Civic Si Hatchback Specs: Si engine, MPG, dimensions, capacities, and curb weight.
- Car and Driver Period Civic Si Test: acceleration, quarter-mile performance, weight, and observed fuel economy.
- U.S. EPA Fuel Economy Guide Data: official archive containing 1991 model-year fuel-economy data.
- Hagerty 1991 Honda Civic Si Valuation: July 2026 collector-market valuation context.
