Hi guys, new on here, so i hope you can help, just bought a 1999 Subaru Forester S Turbo, love the old girl, just a few little niggles i'd like to sort out.....MPG.....horrendous, approx 15mpg, plus the car feels juddery when accelerating, starts fine, bit of smoke first thing. Oil changed, oil filter changed, plugs changed, fuel filter changed, had a knock sensor CEL, so changed that also, running on premium, ECU reset, had OBD check, no faults showing up, so im thinking either the engine is knackerd, though it pulls lovely with loads of power, or maybe it could be the O2 sensor, i've been reading other forums which mention the O2 sensor, but wondered if anyone has had the same issues before i go spending another ton plus on something that doesnt change the juddering.
Forgot to mention. its done 170000miles.
I'm looking forward to your reply guys......unless its bad bad news.