Hello there everyone,
This is my first post, so please excuse me if I break any rules!
Right, i've got an 2001 E39 525d SE Touring. It's done 175k miles, FSH, fully loaded apart from Comms Pack and Leathers.
I got this to replace the E34 525 TDS, as wanted something a little more modern, but similar economy / performance. I must say, the E34 felt more solid than this car does!
A few niggles I wish to post up on here, in the hope of getting some replies!
The problem I have is that the fuel economy doesn't seem to be brilliant? I understand that being a Touring, it's a heavier car, so it will drink a little more.
However, a week ago, I filled up £55, and only got 230 miles out of the tank! I wasn't hammering the car, was driving sensibly, around town and on the dual carriageway. The fuel at the time was £1.20 per litre, so that works out to 23mpg! Which is shocking, and I could get way better mpg out of my old 328i Coupe!
It was -2.5 degrees, and the car was smoking a little (normal, I presume in that temp?). I could smell diesel fumes in the cabin, and the mpg on the trip computer fell to the teens! Could it have been bad batch of fuel?
However, since then, the issue seems to have gone, and I have 43+ mpg showing on the trip computer when on a good run. How accurate are the trip computer figures? The economy still doesn't seme brilliant to me...
Also, the car seems to 'hiccup' or hesitate a little at low revs, when accelerating in 1st and 2nd gear?
Intermittently, the Traction Control Light comes on and stays on. Then, on other occasions, ABS / Traction / Brake Warning Lights come on for a few minutes, then disappear.
There are no hot starting / cold starting issues, and the car does not seem to smoke excessively.
I have read various forums, and understand that it can be MAF sensors, Injector Leaks, etc. but, from what I have described, could anyone please point me in the right direction as to what to check / what it can be?
If the fuel economy doesn't approve, then I will keep the E34, as that thing did a genuine 32+ mpg, whilst being hammered!
Any help would be greatly appreciated.