Would like to share my GM experience.
Back in 1993 purchased 2 Daewoo Racer which were Pontiac Le Mans rebadged versions made by Daewoo Heavy Industries car division in Korea. Were simple single point OHC injected engines. Sold both near mint condition last year, both serviced at recommended factory intervals. Right before selling them was offered a second hand Aveo with 30 K kilometrs in mint cond, but asking price was not that attractive, so went for a new light grey 2000 sedan LT model. I'm lucky to count locally with a well trained GM tech that has fully serviced both Racers through their years and now servicing my mint cond 2000 Aveo.
So far has travelled 25 K Km, mext month will be 4 years old, tires are original and still with 50 % life expectancy left over due to checking tire pressures when cold each 15 days. Receives a complete maintenance each 10 K Km, due to travellling short distances and heavy slow traffic at peak hours. The car is confortable and fun to drive, has good vision all around car.
The key is to have IAC and TPD inyector valves immaculate clean and well lubed to have a very long lasting duration compared to extending maintenances more than factory recommended. The car uses unleaded E8 95 octane gasoline which keeps my engine very clean, with less carbon build ups and nice engine response. I'm a outboard tech and belong to a boating forum in which members states that using E fuels can lower as much as 2 posted octanes at pump, does somebody knows something about this ?
The Aveo imported down here are 1.4 Ecotec versions, probably price issues. The car has a good millage as long you don't step on the throttle pedal. This engine has been designed for good millage, not fast drag response. Find has a bit slow response under 3K rpm when you need to pass oher cars at one way highways. Has good 160-170 Km hour top speed on flat no windy highways.
Was about to bite the bullet and purchase a Sonic hatchback 1.6 Ecotec version as a week end sport car, the only visual issue that dissappointed from buying it was the horrible pannel board odometer with so many color lights horrible distributed. Read that has down issues regarding 4-5 gear up shifts to optimize fuel consumtions at speed. Instead went for a MG 1.6 hatchback sedan with electronic gear case, fun to drive and with fast response to 5-6 K rpm near isntantly.
Bottomline, will definitely buy a new Aveo, it's affordable, good looking and cheap to maintain including spare parts compared to other car brands.