Disadvantages of Turbocharging?

[StElliana]

Disadvantages of turbocharging: Where does engine power come from? First, intake air, inject fuel, then compress, and perform work to generate power. To produce greater power, it's quite simple: increase the intake air volume and fuel injection volume on the original basis, thereby enhancing the engine's power performance and generating greater horsepower. It sounds easy, but it's not simple to achieve. Turbocharging is the product of this idea, and currently, this technology is still being continuously researched and improved. The principle of turbocharging is that within the same unit of time, it can forcibly squeeze more air-fuel mixture into the cylinder for compression and combustion, thereby producing greater power output compared to a naturally aspirated engine.

[Paige]

Veteran drivers who have experienced turbocharged cars know the most annoying issue is turbo lag. Every time you step on the gas, you have to wait over a second for the power to kick in, which is maddening when overtaking in the city. Last year, I drove my friend's naturally aspirated sedan and found the throttle response much more immediate, even though the absolute power wasn't as strong as a turbocharged car. Also, maintenance needs to be more frequent—full synthetic oil changes every 7,500 km, while naturally aspirated cars can stretch mineral oil changes to 10,000 km. The engine bay temperatures are terrifyingly high; in summer, you could fry an egg under the hood, and rubber hoses deteriorate faster. My friend's old Bora's turbo failed after ten years, and the repair bill was painful to look at.

[OTucker]

Turbo heat dissipation is the biggest headache for car modders. Once after a mountain run, I didn't dare to turn off the engine immediately - had to wait three minutes for the turbo to cool down while cars behind me honked like crazy. Although new cars now come with delayed cooling systems, it's still risky during summer heatwaves. The tuning shop boss always insists on upgrading the cooling system - bigger intercooler plus oil cooler, costing over ten grand in total. 95-octane fuel is the bare minimum - I never dare to use small gas stations. Once tried saving money with 92-octane and the engine check light stayed on the whole trip. If you frequently drive in high-altitude areas, you'll need ECU remapping - naturally aspirated cars aren't this finicky.

[StMaya]

As a commuter stuck in city traffic every day, I find the jerky feeling of turbocharged cars at low RPMs the most annoying. Especially during stop-and-go traffic on the expressway after work, it feels like being kicked in the back constantly, and prolonged driving actually makes me carsick. The uphill climb in the company's underground parking lot is the worst - I have to step on the gas, release slightly, then press again to make it smooth. My cousin's hybrid doesn't have this problem at all. Another issue is the fuel consumption is significantly higher than the official data - the dashboard shows 7.8L but actual calculation reveals over 9L. Last month during maintenance, the 4S shop told me I needed throttle body and intake tract cleaning, a service that naturally aspirated cars only need at 60,000 km, but turbo cars require at just 30,000 km.

[McAlan]

Buying a used turbocharged car is like opening a mystery box. My neighbor got a six-year-old turbo car on the cheap, and by the third month, the turbo blades shattered, damaging the entire intake system. The repair cost was almost half the price of a new engine. The mechanic in our neighborhood said failure rates for turbo cars spike after the warranty expires, while naturally aspirated engines can run for a decade with barely any issues. Even family road trips become nerve-wracking—last time at a highway rest stop, I noticed the coolant was mysteriously low, only to later find out it was due to a slight leak in the turbo piping. Now I’ve shelled out an extra 4,000 yuan for an extended warranty, just for peace of mind.

[McRyder]

Every auto mechanic knows that a turbocharging system adds a double burden to the engine. The turbo's bearings spin at over 100,000 RPM, with operating temperatures exceeding 900 degrees Celsius—equivalent to placing an exhaust pipe right next to the engine and roasting it. Last week, we dismantled a turbocharged car with oil burning issues: the piston rings were caked with carbon deposits like coal slag, and the valve stems were severely coked. OEM designs have to balance cooling and strength, requiring special reinforcement of the cylinder block. Small manufacturers cutting corners on turbocharged cars are most prone to problems—our shop sees cases every month of turbo intake pipe oil leaks and intercooler cracks. Veteran drivers say naturally aspirated engines are simpler and more reliable, and they're absolutely right.