keep the astra. the car has very low resale value in case you sell it. i think the most you can sell it is between 250-300k. lugi ka na ng mga 600k if you bought the car brand new.

besides, the car has not given you any problems. dont worry about maintenance. parts are readily available at banawe (thunder and fronte) and it is not as expensive as you think. check out the club site for opel philippines to give you more idea about maintenance.

besides, you already have a CUV so you might not need a big car like the escape for out of town trips and driving in floods. and you can still sell it at a much better price given the low mileage.