1981 BMW 745 vs. 2007 Opel Astra

To start off, 2007 Opel Astra is newer by 26 year(s). Which means there will be less support and parts availability for 1981 BMW 745. In addition, the cost of maintenance, including insurance, on 1981 BMW 745 would be higher. At 3,430 cc (6 cylinders), 1981 BMW 745 is equipped with a bigger engine. In terms of performance, 1981 BMW 745 (252 HP @ 5200 RPM) has 147 more horse power than 2007 Opel Astra. (105 HP @ 6000 RPM). In normal driving conditions, 1981 BMW 745 should accelerate faster than 2007 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 1981 BMW 745 weights approximately 325 kg more than 2007 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.

Because 1981 BMW 745 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1981 BMW 745. However, in wet, icy, snow, or gravel driving conditions, 2007 Opel Astra, being front wheel drive (FWD), will offer much better control with better grip. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 1981 BMW 745 (380 Nm @ 2200 RPM) has 230 more torque (in Nm) than 2007 Opel Astra. (150 Nm @ 3900 RPM). This means 1981 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Astra. 2007 Opel Astra has automatic transmission and 1981 BMW 745 has manual transmission. 1981 BMW 745 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Opel Astra will be easier to drive especially in heavy traffic.

Compare all specifications:

1981 BMW 745 2007 Opel Astra
Make BMW Opel
Model 745 Astra
Year Released 1981 2007
Body Type Sedan Hatchback
Engine Position Front Front
Engine Size 3430 cc 1598 cc
Engine Cylinders 6 cylinders 4 cylinders
Engine Type in-line in-line
Horse Power 252 HP 105 HP
Engine RPM 5200 RPM 6000 RPM
Torque 380 Nm 150 Nm
Torque RPM 2200 RPM 3900 RPM
Engine Bore Size 92 mm 79 mm
Engine Stroke Size 86 mm 81.5 mm
Engine Compression Ratio 8.0:1 10.5:1
Top Speed 220 km/hour 187 km/hour
Drive Type Rear Front
Transmission Type Manual Automatic
Number of Seats 5 seats 4 seats
Number of Doors 4 doors 3 doors
Vehicle Weight 1590 kg 1265 kg
Vehicle Length 4870 mm 4300 mm
Vehicle Width 1810 mm 1760 mm
Vehicle Height 1440 mm 1440 mm
Wheelbase Size 2800 mm 2620 mm
Fuel Tank Capacity 100 L 52 L


 

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