I have always been interested in buying a car ever since I cleared campus ago, but salo wasn’t raised very well so I have done a lot of reviews of almost all types of cars in Kenya, including the ones that only akina Uhuru and Kyeff Joinambe can afford. It’s true that 3rd hand cars can be quite a mess and it’s also true that Toyotas are quite overrated in Kenya to say the least. To save fuel, your car should either be 1000cc or 1300cc, hence the only available options are:

Nissan March (except that quite it’s ugly and looks womanish and looks like its stretching after a serious gym workout),

Toyota Vitz (not bad but womanish as well, looks like a woman with a serious attitude issue that wants to proof a point and happens that you are to be used during the process),

Mazda Demio (not man enough but at least better than the other two)

Toyota Duet (small, womanish and very efficient fuel wise though the front look looks like it’s a car always frowning and angry, just like Sienta),

Honda Fit (if u can get one at that price, the best option of all these; not so womanish, efficient consumer and spacious)

Toyota Passo (good, though small I always pity it on the road though huwanga niko kwa Nazigi Sacco because its like if its scratched by Paradiso za Thika Road, it can shed tears coz its so so small but at least it looks manly)

Avoid
Toyota 110 (overrated)
Nissan B15 (overheating and gear box issues at times)
Toyota 100 (prone to theft by akina Kamau, Njoroge and company)

You can get a nissan march. Advan old shape ongeza around 20k, demio old shape ongeza around 30k. 450 should het you a relatively ok vehicle. honda fit aria etc.