2007 Citroen C4 vs. 2013 BMW 6 series
To start off, 2013 BMW 6 series is newer by 6 year(s). Which means there will be less support and parts availability for 2007 Citroen C4. In addition, the cost of maintenance, including insurance, on 2007 Citroen C4 would be higher. At 4,395 cc (8 cylinders), 2013 BMW 6 series is equipped with a bigger engine. In terms of performance, 2013 BMW 6 series (439 HP) has 331 more horse power than 2007 Citroen C4. (108 HP) In normal driving conditions, 2013 BMW 6 series should accelerate faster than 2007 Citroen C4. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW 6 series weights approximately 850 kg more than 2007 Citroen C4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2013 BMW 6 series 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 2013 BMW 6 series. However, in wet, icy, snow, or gravel driving conditions, 2007 Citroen C4, 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, 2013 BMW 6 series (651 Nm @ 4500 RPM) has 504 more torque (in Nm) than 2007 Citroen C4. (147 Nm @ 4000 RPM). This means 2013 BMW 6 series will have an easier job in driving up hills or pulling heavy equipment than 2007 Citroen C4.
Compare all specifications:
| 2007 Citroen C4 | 2013 BMW 6 series | |
| Make | Citroen | BMW |
| Model | C4 | 6 series |
| Year Released | 2007 | 2013 |
| Body Type | Hatchback | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1587 cc | 4395 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 108 HP | 439 HP |
| Torque | 147 Nm | 651 Nm |
| Torque RPM | 4000 RPM | 4500 RPM |
| Engine Bore Size | 78 mm | 84 mm |
| Engine Stroke Size | 82 mm | 89 mm |
| Engine Compression Ratio | 11.0:1 | 10.0 :1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 194 km/hour | 250 km/hour |
| Acceleration 0-100mph | 10.6 seconds | 4.5 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Manual | 6-speed manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1200 kg | 2050 kg |
| Vehicle Length | 4270 mm | 4897 mm |
| Vehicle Width | 1780 mm | 1895 mm |
| Vehicle Height | 1460 mm | 1364 mm |
| Wheelbase Size | 2610 mm | 2855 mm |
| Fuel Tank Capacity | 60 L | 70 L |
