An t-seachdain seo tha Air an Rathad a' sealltainn mar a lùghdaicheas tu cosgaisean, 's sinn a-nis ann an staing an ionmhais. Tha Murray a' sgrùdadh roghainnean nas saoire na diesel agus tha Fiona a' coinneachadh ri eileanach a tha air a bhith a' cur connadh, a rinn e fhèin air 20 sg gach liotair, anns a' bhan aige fhèin bho chionn còig bliadhna! Anns na deich bliadhna mu dheireadh, tha an Rìoghachd Aonaichte air a dhol bho thè dhe na dùthchannan as daoire anns an Roinn Eòrpa airson càr ùr a cheannach gu tè dhen fheadhainn as saoire. Tha Murray a' sireadh nam bargan agus a' tighinn an àirde leis an dà chàr as saoire ann an Alba. Tha Louise ga chuideachadh gus faicinn cò ris a tha iad coltach. Tha sinn cuideachd a' faighinn cuideachadh bho theaghlach Gàidhealach gus dearbhadh a dhèanamh air fear dhe na càraichean teaghlaich as saoire a tha ri fhaighinn. Tha an sgioba a' rèiseadh ann an Cuach nan Rèisean Craicte - cò gheibh a' chiad àite an t-seachdain seo? This week the Air an Rathad team reveal how to cut the cost of motoring in this new age of austerity. Murray investigates a cheaper alternative to the regular diesel you buy at the pumps, while Fiona meets an island man who, for the past five years, has been running his van on fuel which he makes himself for just 20p a litre! Over the past decade, the UK has gone from being one of the most expensive places in Europe to buy a new car to one of the cheapest. Murray searches out the best deals and comes up with the two cheapest new cars available in Scotland. He calls in Louise's help to put them through their paces. And we also enlist the help of a Highland family to test drive one of the most affordable family cars on the market.