1. got new econo car (hyundai accent 3dr hatch, sport suspension B&M shift) it's a blast to drive and i get on average 33-35mpg. aprox. 8 mpg better than the car i had to replace
2. got wife a different car: traded off 02 Tahoe 4x4 5.7 liter V8 for a new (07) Ford Edge AWD V6. this vehicle kicks ass, we love it it gets nearly 8mpg better than the tahoe got
we went from spending around $1000 per month on fuel to just under $700 with those to different cars.
Try looking into a Volkswagen Diesel for example a Passat... I have a 2001 Volkswagen Passat Estate (1.9TDI, 130BHP, 2001) and she will return about 60MPG on motorways and about 45ish in and around town.
Try and stay away from the newer Vw's, they are starting to make their engines hollow and it is causing problems (VW Senior Tech told me
Not everything is a need, its mostly want in this day and age. Many things are becoming throw away and its not cost effective to repair most things these days.
House hold appliances e.g. Kettles... I can by Tesco's Value kettles for something like £6.00, or I can get a Russell Hobbs for £30+... They last the same age (The tescos one out lived the expensive ones), they do the same thing and if they break, you can just buy another one. Same with toasters etc.
Over here we have SKY (TV) which you can pay every month for extra channels/packages or what have you, and you can also buy something called a Freeview box (name says it all)... Ok you only get 40 some odd channels, but how many do you really need? I hardly watch any TV (and I have TV on my PC too)
Food. That is one essential thing. Don't skimp. Make sure you and your family are getting good proper food, and try and stick away from fast foods and the ready meals.
Fuel... Thats a tough one... I run regular in all of my bikes/cars, to be honest I don't notice a thing... (they don't ping either)
Little bits here and there can go along way, nothing is easy, just stay strong.