1989 Renault 21 vs. 2010 Mercedes-Benz B
To start off, 2010 Mercedes-Benz B is newer by 21 year(s). Which means there will be less support and parts availability for 1989 Renault 21. In addition, the cost of maintenance, including insurance, on 1989 Renault 21 would be higher. At 1,991 cc (4 cylinders), 2010 Mercedes-Benz B is equipped with a bigger engine. In terms of performance, 2010 Mercedes-Benz B (108 HP @ 4200 RPM) has 33 more horse power than 1989 Renault 21. (75 HP @ 5000 RPM) In normal driving conditions, 2010 Mercedes-Benz B should accelerate faster than 1989 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 2010 Mercedes-Benz B weights approximately 480 kg more than 1989 Renault 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2010 Mercedes-Benz B (250 Nm @ 1600 RPM) has 121 more torque (in Nm) than 1989 Renault 21. (129 Nm @ 3250 RPM). This means 2010 Mercedes-Benz B will have an easier job in driving up hills or pulling heavy equipment than 1989 Renault 21.
Compare all specifications:
| 1989 Renault 21 | 2010 Mercedes-Benz B | |
| Make | Renault | Mercedes-Benz |
| Model | 21 | B |
| Year Released | 1989 | 2010 |
| Engine Position | Front | Front |
| Engine Size | 1721 cc | 1991 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 75 HP | 108 HP |
| Engine RPM | 5000 RPM | 4200 RPM |
| Torque | 129 Nm | 250 Nm |
| Torque RPM | 3250 RPM | 1600 RPM |
| Engine Bore Size | 81 mm | 83 mm |
| Engine Stroke Size | 83.5 mm | 92 mm |
| Engine Compression Ratio | 9.2:1 | 18.0:1 |
| Fuel Type | Gasoline | Diesel |
| Top Speed | 176 km/hour | 183 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 960 kg | 1440 kg |
| Vehicle Length | 4470 mm | 4280 mm |
| Vehicle Width | 1730 mm | 1780 mm |
| Vehicle Height | 1430 mm | 1610 mm |
| Wheelbase Size | 2550 mm | 2780 mm |
| Fuel Consumption Overall | 7 L/100km | 5.6 L/100km |
| Fuel Tank Capacity | 55 L | 54 L |
