2009 Acura RDX vs. 1975 Mazda RX 4 Coupe
To start off, 2009 Acura RDX is newer by 34 year(s). Which means there will be less support and parts availability for 1975 Mazda RX 4 Coupe. In addition, the cost of maintenance, including insurance, on 1975 Mazda RX 4 Coupe would be higher. At 2,616 cc (2 cylinders), 1975 Mazda RX 4 Coupe is equipped with a bigger engine. In terms of performance, 2009 Acura RDX (240 HP @ 6000 RPM) has 126 more horse power than 1975 Mazda RX 4 Coupe. (114 HP @ 6000 RPM). In normal driving conditions, 2009 Acura RDX should accelerate faster than 1975 Mazda RX 4 Coupe. With that said, vehicle weight also plays an important factor in acceleration. 2009 Acura RDX weights approximately 340 kg more than 1975 Mazda RX 4 Coupe. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2009 Acura RDX (353 Nm @ 4500 RPM) has 188 more torque (in Nm) than 1975 Mazda RX 4 Coupe. (165 Nm @ 4000 RPM). This means 2009 Acura RDX will have an easier job in driving up hills or pulling heavy equipment than 1975 Mazda RX 4 Coupe.
Compare all specifications:
| 2009 Acura RDX | 1975 Mazda RX 4 Coupe | |
| Make | Acura | Mazda |
| Model | RDX | RX 4 Coupe |
| Year Released | 2009 | 1975 |
| Engine Position | Front | Front |
| Engine Size | 2300 cc | 2616 cc |
| Engine Cylinders | 4 cylinders | 2 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 240 HP | 114 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 353 Nm | 165 Nm |
| Torque RPM | 4500 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1450 kg | 1110 kg |
| Vehicle Length | 4600 mm | 4400 mm |
| Vehicle Width | 1880 mm | 1670 mm |
| Vehicle Height | 1660 mm | 1390 mm |
| Wheelbase Size | 2660 mm | 2520 mm |
