since the TS is more onto VIP style/elegance which also he can put some modification twist on it.
my suggestion would be Mitsubishi Galant VR4 V6 (a.k.a Mitsubishi Galant VR shark), 2.0 V6 engine 168hp with 4-speed INVECS automatic tranny with a fuel consumption of 6km/L city driving and 9km/L highway driving (according to the review), I guess you have some gas allowance right? may budget ka ngang pampamods e pang-gas pa kaya, I guess a gas up of 500php everyday or a full tank everyweek would not be a big deal for you. hehehe!!! and btw since VIP Style ka nga, di mo naman siguro kelangan ihatawhataw ito like other teen drivers around (they driving like a maniac, natural lang yun, teenager e, ganon rin naman ako minsan, minsan lang pagnagmamadali talaga/ kapag mala-late na sa klase hahaha!!...), easy and light foot driving lang would do the trick to save a gas in every trip
kung gusto mo medyo fuel-efficient ng konte rito, other options would be Mazda 626 and Toyota Corona 1998 - 2000