Cadillac Brougham: Which Version Should You Buy?
The Cadillac Brougham has one generation, produced from 1987 through 1992 as a Sedan. Buyers therefore do not need to compare different generations or body types: the meaningful choice is between the two listed Gasoline versions, 5.0 AT and 5.7 AT.
The Cadillac Brougham has one generation, produced from 1987 through 1992 as a Sedan. Buyers therefore do not need to compare different generations or body types: the meaningful choice is between the two listed Gasoline versions, 5.0 AT and 5.7 AT. Both have a 4-speed Automatic gearbox, RWD, a naturally aspirated V-shaped 8-cylinder engine, 1,940 kg kerb weight, 140 mm ground clearance, and a 95-litre fuel tank. The 5.7 AT is the stronger and quicker option, while the 5.0 AT offers the smaller engine and specifies 95 fuel.
Cadillac Brougham generations: what changed?
There is only one Cadillac Brougham generation in the supplied catalogue data. The 1 generation ran from 1987 through 1992, used a Sedan body, and included two versions: 5.0 AT and 5.7 AT. Because no second generation or restyling is listed, there is no generation-to-generation change to compare.
The production dates for both versions are also 1987 through 1992. The data therefore does not assign the engines to different individual model years. A buyer researching a 1987, 1989, or 1992 Cadillac Brougham should verify the exact version rather than infer its engine or horsepower from the year alone.
Cadillac Brougham engine and specs
| Version | Power | Torque | Displacement | Fuel | Cylinders and layout | Boost | Gearbox | Drive |
|---|---|---|---|---|---|---|---|---|
| 5.0 AT | 173 hp (127 kW) at 4,200 rpm | 346 Nm at 2,400 rpm | 5,001 cc | 95 | 8, V-shaped | No | 4-speed Automatic | RWD |
| 5.7 AT | 188 hp (138 kW) at 3,800 rpm | 407 Nm at 2,400 rpm | 5,733 cc | 92 | 8, V-shaped | No | 4-speed Automatic | RWD |
Both engines have 2 valves per cylinder and central injection. Neither version has boost. The 5.0 AT has a compression ratio of 9.3 and a bore-and-stroke measurement of 94.89 × 88.39 mm. The 5.7 AT has a compression ratio of 9.8 and measures 101.6 × 88.4 mm.
The larger 5.7 AT adds 732 cc, 15 hp, 11 kW, and 61 Nm over the 5.0 AT. Its peak power also arrives 400 rpm earlier, while both engines reach peak torque at 2,400 rpm.
Calculated from the supplied displacement and output figures, the 5.0 AT produces about 34.6 hp per litre and the 5.7 AT about 32.8 hp per litre. The smaller engine has the higher specific output, but the larger engine provides more total power and substantially more torque.
Cadillac Brougham horsepower and performance
| Version | 0–100 km/h | Top speed | Kerb weight per horsepower |
|---|---|---|---|
| 5.0 AT | 12 seconds | 190 km/h | about 11.2 kg/hp |
| 5.7 AT | 10.5 seconds | 197 km/h | about 10.3 kg/hp |
The 5.7 AT reaches 100 km/h 1.5 seconds sooner and has a top speed 7 km/h higher than the 5.0 AT. Because both versions have the same listed kerb weight, the more powerful engine also improves the weight-to-power relationship by about 0.9 kg/hp.
These figures make the performance choice straightforward. The 5.7 AT supplies about 8.7% more horsepower and about 17.6% more torque, while cutting the 0–100 km/h time by 12.5%. The strongest numerical gain is torque: the additional 61 Nm is much larger proportionally than the 15 hp increase.
Cadillac Brougham mpg and fuel economy
City fuel consumption is not measured for both 5.0 AT and 5.7 AT. Highway fuel consumption is not measured for both versions, and combined fuel consumption is also not measured. An mpg comparison cannot therefore be made from the supplied data.
CO₂ emissions are not measured for either version, and the emissions class is not measured. Both versions have a 95-litre fuel tank. The listed fuel value is 95 for the 5.0 AT and 92 for the 5.7 AT, but the absence of consumption figures means tank capacity cannot be converted into a supported driving-range estimate.
Cadillac Brougham dimensions and weight
| Measurement | 5.0 AT | 5.7 AT |
|---|---|---|
| Kerb weight | 1,940 kg | 1,940 kg |
| Gross weight | not measured | not measured |
| Ground clearance | 140 mm | 140 mm |
| Fuel-tank capacity | 95 litres | 95 litres |
| Wheel sizes | not measured | not measured |
Overall length is not measured, width is not measured, height is not measured, and wheelbase is not measured in the supplied data. Those Cadillac Brougham dimensions cannot be stated reliably here.
The chassis specifications do not separate the two versions. Both have independent spring front suspension and independent spring rear suspension, with ventilated disc front brakes and drum rear brakes. Since kerb weight, clearance, tank capacity, suspension, and brakes are identical in the listed specifications, none of these parameters gives either version an advantage.
Which Cadillac Brougham version should you buy?
Choose the 5.7 AT if performance is the priority. Compared with the 5.0 AT, it provides 15 hp and 61 Nm more, reaches 100 km/h 1.5 seconds sooner, and raises top speed by 7 km/h. It delivers these gains without any increase in the listed 1,940 kg kerb weight and retains the same 4-speed Automatic gearbox, RWD, 140 mm clearance, and 95-litre tank.
Choose the 5.0 AT if you specifically want the smaller 5,001 cc engine. It gives up performance to the 5.7 AT, producing 173 hp and 346 Nm rather than 188 hp and 407 Nm, but its calculated output per litre is about 1.8 hp/litre higher. Its listed fuel value is 95, compared with 92 for the 5.7 AT.
The available data cannot support a decision based on purchase price, availability, mpg, reliability, repair costs, engine swaps, or condition because none of those figures is supplied. It also cannot establish what any extra purchase money buys. On measurable specifications alone, the 5.7 AT is the better performance choice; the 5.0 AT is the alternative for a buyer who values the smaller displacement more than the larger engine’s extra output.