Overheating, Engine Misfire, Oil Light, Coolant Light

Sell it as a mechanic special its $ to repair all this issues you won't recover your expenses on the Audi 1.8T

I know that, but some things I have suspected it of being is less than $100 for the parts and I have someone to do the work for free. I just need to know what people think it is, because it could be a number of things. I'm not going to fix the things that are hundreds of dollars to fix.

If coolant tank is full n still overheats replace temperature sensor n theres two of them should cost around 30-35$ for both... Sensor 1 is located at the top behind engine. To remove all u have to do is remove air hose connect to head gasket cover n its right below it n its green color, slide lock pin out n pull sensor out, make sure to remove black rubber seal too or O ring after clean good n inspect connector wire before putting it back... Senosor 2 located at buttom front driver side next to radiator mounted on coolant drain flange n color grey N for this 1 u actually have to drain coolant cause once u pull the sensor all the coolant n anything in there comes out so make sure to hav new coolant ready N ur coolant should be pentofrost sf red coolant.. U also should be able to flush while having both sensors out just turn car off use distilled water no mineral from cvs store 3$ a gallon 2 should do the job... Simply pour water from top sensor hole n everything come out or u can also use coolant tank. I recommend both for more clean... After put everything back N this should fix ur coolant problem.

For ur oil It just need new oil with new oil filter maybe oil too old or low but I recommend new oil change n car should be using 0-40 full/advance synthetic mobil1 for hot weather N 5-30 full/advance synthetic mobil1 extended performance for cold weather... U can buy the oil with mobil1 filter n have shop change it for 35-40$ or u can do it urself N it should fix it

For ur random missfire there are a couple of thing... Could be maf,vacuum leak,engine speed sensor/cam shaft ssensor fuel injectors,ignition coil n spark plug or bad ignition coil wires(sometimes they get old n start to crack open N its exposed N it happens to all 4 connector including all 4 fuel injectors connector too I recommend start inspecting connector wire first then work ur way down... To be honest car is worth it if DIY type person N also wont cost $ but will cost alot of ur time stop believing ppl talk about $ but its true if ur a take it to the shop type person I hope ur car start driving again keep us posted