I now have about 3000 hours on piston engine aircraft and have yet to have an engine failure. I did once have to shut down an engine on a light twin as a precaution but it would have got me to an airfield if it had been the only engine fitted.
Most engine failures seem to result from dry fuel tanks.
If you want to stack the odds in ypour favour take a good look at the maintenance that the flying club has done and the price that you are paying, if it is rock bottom then it is likely that the maintenance is being skimped on, if you are paying the very top rate for the aircraft I would think about changing clubs but if the rate you are paying is about mid-market then you are dealing with a reputable club that probably look after its aircraft its aircraft well.
I see from your profile that you are from London so a few club recomendations for you are:- At Booker BAFC or WAC at White Waltham WLAC at Stapleford SFC.