First car – approx. 3800€ Budget – 20,000km / year

Hello dear community, I am looking for a car for me and especially for my girlfriend. My girlfriend needs a car for the way to her training center. She has to drive about 70 kilometers every day. I have already looked around a lot, but I can not make any justified decisions for a car, because I have too little experience. I first write down the cornerstones that I feel important: small / small car (for beginners) 60-80 hp (city 20%, country road 8 0%, no more power is needed, I think) As low as possible consumption (comb. <6 liters, better <5 ) working distance 70km --> approx.20,000km per year +/- 2,000 As low as possible in maintenance Buying cost < 3800€ EZ: min. 2006 Max. kilometer 80,000 My previous search results mostly revolve around the following cars: Peugeot 107 Filou http://suche.mobile.de/.../205668066.html?... Citroen C1 http://suche.mobile.de/.../205779484.html?... Kia Picanto 1.1 http://suche.mobile.de/.../204689 272.html?... Nissan Pixo 1.0 http://suchen.mobile.de/.../205323492.html?... Hyundai i.10 http://suchen.mobile.de/.../205329544.html?... Now I'm pretty stuck with my demands, but don't know if it makes sense to stiffen up like this (just in relation to max kilometers, EZ). Furthermore, I don't know if it can be cheaper for me to buy a diesel at the annual run performance? Maybe you can help me and either on new ideas b wrestling or agreeing with me on the cars Lg, Skittels