In our eyes, high-mileage cars are nothing to be scared of. Of course, that’s true only if we have a tendency to mention frequently serviced and properly maintained cars, just like the 320,000-mile (514,990-kilometer) BMW M5 E39 from the video here. I do know the clip says the automobile has 409,000 miles (658,221 km) on the clock however it’s necessary to note that the engine was replaced by BMW for high oil consumption problems in 2003. Still, 320,000 miles (514,990 km) is kind of a formidable number, particularly for a performance sedan.
On paper, a stock M5 E39 delivers 394 HP (294 kilowatts) at the crank from its 4.9-liter V8 underneath the hood. a fast dyno check should show whether or not the high-mileage M5 had lost any power and to place the numbers into perspective, the folks over from LegitStreetCars compare it with a “garage queen” M5 E39 with only 78,000 miles (125,528 km) on the clock.
The 13:12-minute video provides attention-grabbing details regarding tuning and maintaining the performance sedan (make sure to watch it from A to Z) however let’s get straight to the point. The dyno shows the high-mileage M5 generates 282 wheel HP (210 wheel kilowatts) with mass airflow sensors connected and stock tune versus 207.2 hp (154,5 kW) for the newer M5. That’s a touch weird however the numbers look obviously with the sensors disconnected and adaptations reset – 292.7 hp (218,3 kW) versus 309.6 hp (230,9 kW).
The final dyno run compares the 2 cars with mass airflow sensors disconnected and the Alpha-N tune package. and therefore the numbers don’t lie – the M5 with fewer miles generates 346.7 hp (258,5 kW) versus 326.6 hp (243,5 kW) for the high-mileage hero. Still, a reasonably spectacular result, right?
The difference between the two M5’s might not be considerable but the fact that the bimmers held their shape so good and still produce almost the same horsepower as out of the factory is astonishing in my opinion, and unless you’re going to daily drive one of these, you’re going to feel a little different when switching from one to another, but still, the drop of horsepower in more than 300.000 miles is more than adequate for such an old M5 model.
