Sean159. Until recently I had been driving diesel cars for 22 years, Citreon, Saab and more recently Alfa Romeo. At one point I was doing 30 - 40K miles a year, so I do have a little experience of diesel cars.
The 159 1.9JTDm is a fine engine, and not krap (Even with a
). It is more than capable (IMO) of achieving an average of 40mpg. Some say the 159 uses a lot of fuel because of its weight. Lets take a look at Parkers for some data:
BMW 320d 1430kg
Audi A4 2.0d 1475kg
Saab 9.3 Vector 1.9 Tid 1500kg
Alfa Romeo 159 Lusso 1490kg
60 kg overweight at worst, thats diddly squat.
Next aerodynamics, around town or short slow trips it has little impact. At 70mph on an M way is where aerodynamics would be the a greater drawback, my 159 complete with its EGR and DPF fitted and no remap would do 50mpg cruising on the Mway..
You say your girl friends 407SW will do 53mpg, they are 136bhp arnt they?
Of the diesels I have owned, I have always found they need at least 20k to loosen up, then just get better and better, the 159 was no different. When I sold it at 93k it was running like a dream and still averaging 43mpg.
I'll tell what I believe is the problem with poor fuel consumption on the 159, or any car for that matter. Firstly having followed several posts on the subject, some people buy the wrong car. To buy a diesel and then do a 5 or 6 mile commute is asking for trouble. Even if the car gets a good run at the weekend, IMO it is still asking for trouble and will lead to poor fuel consumption. Next, I've driven enough miles, filled up with enough fuel to be able to tell you with authority that super market fuel is rubbish! Not only will you not get the miles, I'd have a bet the fuel will lead to premature DMF clogging (that though is an unscientific assessment)
Now lets look at driving `style. If I were to drive my 159 ragging it everywhere the consumption would fall off a cliff, and it would in any car. Dont buy a car drive it like its stolen and still expect a good return on your fuel.
Lastly, maintenance, modern synthetic oils will work for high miles. If though you are only doing the 6 mile commute the oil will degrade much sooner so more frequent oil changes are essential, and see as you are only changing oil every 12k, put a decent one in, overall the cost is low. If you are doing your own maintenance dont forget things like fuel filters as well.
But let me just say again, if you want the best out of any diesel engined car you need to be doing at least 15k PA with a minimum regular journey distant of 20miles.
Now I'll wait for Coxy1 to send you the lesbians!
PS, how the hell do you get 32mpg out of a 2.2 JTS? Reeeeeally interested in that!