Which Oldsmobile Aurora Version Should You Buy?
The Oldsmobile Aurora catalogue covers two Sedan generations and three listed configurations. The first generation, produced from 1994 to 1999, has one 4.0 AT version. The second generation, produced from 1999 to 2003, offers 3.5 AT and 4.0 AT versions.
The Oldsmobile Aurora catalogue covers two Sedan generations and three listed configurations. The first generation, produced from 1994 to 1999, has one 4.0 AT version. The second generation, produced from 1999 to 2003, offers 3.5 AT and 4.0 AT versions. The practical choice is between the second-generation 3.5 AT, which has 218 hp and measured combined consumption of 10.7 l/100 km, and either 4.0 AT, which raises output to 253 hp. The two 4.0 AT entries share the same engine specifications but differ in measured acceleration, maximum speed, tank capacity and available weight data.
Oldsmobile Aurora generations and available versions
The first-generation Oldsmobile Aurora is a Sedan produced from 1994 to 1999. Its single listed version is the 4.0 AT with 253 hp. This generation is the choice for buyers who want the 4.0 AT together with the highest measured maximum speed in the catalogue: 228 km/h.
The second-generation Oldsmobile Aurora is a Sedan produced from 1999 to 2003. It has two versions: the 3.5 AT with 218 hp and the 4.0 AT with 253 hp. It therefore provides a direct engine choice within one generation. The 3.5 AT has measured fuel-consumption and kerb-weight figures, while those values are not measured for the second-generation 4.0 AT.
Oldsmobile Aurora engine options and specs
| Generation and version | Power | Torque | Displacement | Fuel | Cylinders and layout | Boost | Gearbox | Drive |
|---|---|---|---|---|---|---|---|---|
| First generation 4.0 AT | 253 hp at 5600 rpm | 352 Nm at 4000 rpm | 3995 cm³ | Gasoline, 92 | 8, V-shaped | No | Automatic, 4 | FWD |
| Second generation 3.5 AT | 218 hp at 5600 rpm | 312 Nm at 4400 rpm | 3473 cm³ | Gasoline, 92 | 6, V-shaped | No | Automatic, 4 | FWD |
| Second generation 4.0 AT | 253 hp at 5600 rpm | 352 Nm at 4000 rpm | 3995 cm³ | Gasoline, 92 | 8, V-shaped | No | Automatic, 4 | FWD |
All three engines are front, transverse units with Distributed injection (multi-point) and 4 valves per cylinder. The two 4.0 AT versions have the same 3995 cm³ displacement, 253 hp output and 352 Nm torque rating. Each produces about 63.3 hp per litre. The second-generation 3.5 AT produces about 62.8 hp per litre from 3473 cm³.
Moving from the second-generation 3.5 AT to the 4.0 AT adds 522 cm³, 35 hp and 40 Nm. That equals approximately 16.1% more power and 12.8% more torque. The 4.0 AT also reaches peak torque at 4000 rpm, while the 3.5 AT reaches its 312 Nm at 4400 rpm. Both reach peak power at 5600 rpm.
The first-generation and second-generation 4.0 AT have matching engine data, including a 10.3 compression ratio and an 87 × 84 bore and stroke. The 3.5 AT has a 9.3 compression ratio and an 89.5 × 92 bore and stroke.
Oldsmobile Aurora performance and fuel economy
| Generation and version | 0–100 km/h | Maximum speed | City consumption | Highway consumption | Combined consumption |
|---|---|---|---|---|---|
| First generation 4.0 AT | 8.6 s | 228 km/h | not measured | not measured | not measured |
| Second generation 3.5 AT | 10.4 s | 200 km/h | 13.1 l/100 km | 8.7 l/100 km | 10.7 l/100 km |
| Second generation 4.0 AT | 8.5 s | 217 km/h | not measured | not measured | not measured |
Within the second generation, the 4.0 AT reaches 100 km/h 1.9 seconds sooner than the 3.5 AT and has a maximum speed that is 17 km/h higher. These are the clearest measured benefits of choosing the larger engine.
The first-generation 4.0 AT is 0.1 seconds slower to 100 km/h than the second-generation 4.0 AT, but its measured maximum speed is 11 km/h higher. Buyers should not infer an economy advantage for either 4.0 AT: city, highway and combined consumption are all not measured for both versions. Only the second-generation 3.5 AT has measured consumption, at 13.1 l/100 km in the city, 8.7 l/100 km on the highway and 10.7 l/100 km combined.
Oldsmobile Aurora dimensions, weight and capacity
| Generation and version | Kerb weight | Gross weight | Weight per horsepower | Ground clearance | Fuel tank | Wheel sizes |
|---|---|---|---|---|---|---|
| First generation 4.0 AT | 1795 kg | not measured | about 7.1 kg/hp | 140 mm | 76 l | not measured |
| Second generation 3.5 AT | 1645 kg | not measured | about 7.5 kg/hp | 140 mm | 70 l | not measured |
| Second generation 4.0 AT | not measured | not measured | not measured | 140 mm | 70 l | not measured |
The measured first-generation 4.0 AT is 150 kg heavier than the second-generation 3.5 AT. Because the second-generation 4.0 AT kerb weight is not measured, a weight-per-horsepower comparison with either alternative cannot be made from the catalogue data.
Every version has 140 mm of ground clearance. The first-generation 4.0 AT carries 76 l of fuel, which is 6 l more than the 70 l tanks fitted to both second-generation versions. Gross weight and wheel sizes are not measured for any version.
All versions use Independent, spring suspension at the front and rear. Braking equipment is Ventilated disc at the front and Disc at the rear.
Which Oldsmobile Aurora version to buy
Choose the second-generation 3.5 AT if measured fuel consumption matters most. It is the only version with city, highway and combined figures, and its 218 hp, 312 Nm and 1645 kg kerb weight give buyers a more complete set of ownership-relevant specifications. Its compromise is performance: 0–100 km/h takes 10.4 seconds and maximum speed is 200 km/h.
Choose the second-generation 4.0 AT if acceleration is the priority. Compared with the same-generation 3.5 AT, it supplies 35 hp and 40 Nm more, reaches 100 km/h 1.9 seconds sooner and increases maximum speed by 17 km/h. Its principal catalogue uncertainty is that kerb weight and every consumption figure are not measured.
Choose the first-generation 4.0 AT if the highest measured maximum speed, larger tank and known kerb weight are more important than selecting between two engines. It reaches 228 km/h, has a 76 l tank and weighs 1795 kg. Against the second-generation 4.0 AT, it has identical listed engine output and torque, accelerates to 100 km/h 0.1 seconds more slowly, and has an 11 km/h higher measured maximum speed.
There is no supplied information about prices, reliability, engine problems, interiors or vehicles for sale, so none of those factors can support a version recommendation here. On the measured specifications alone, the second-generation 3.5 AT is the most transparent economy-oriented choice, the second-generation 4.0 AT is the quickest choice, and the first-generation 4.0 AT combines the highest measured maximum speed with the largest fuel tank.