Toyota is definitely a good choice in terms of reliability. Just stay away from the hybrid 1.8 engine which has issues with egr valve and manifold clogging leading to blown head gaskets if not cleaned/changed in time.
Prius gen 3 2010-2015, Prius gen 4 2016-2022 and C-HR (all generation) have that particular engine.
Des Pondent it depends on the year of production 2020-2022 shares exactly the same engine, anything before or after used a 2.0L hybrid engine
Hi Pawel,
I submitted the prompt below to Google Gemini and received the following output:
Prompt:
Compare the reliability of the Toyota Prius gen 3 2010-2015 versus Toyota Prius gen 4 2016-2022
Output:
In the world of used Toyotas, the jump from the Gen 3 (ZVW30) to the Gen 4 (ZVW50) is one of the most significant reliability leaps in the brand's history. While the Gen 3 made the Prius a household name, it also introduced several "ticking time bombs" that the Gen 4 successfully engineered out of existence.
### The Gen 3 "Fatal Flaws" (Why it's riskier)
The Gen 3 is a great car if meticulously maintained, but it has three specific issues that can cost more than the car is worth:
The Head Gasket Trap: The EGR (Exhaust Gas Recirculation) system clogs with carbon. This causes the engine to run hot, eventually blowing the head gasket around the 120,000-mile mark. If not caught instantly, it can destroy the engine.
Inverter Overheating: Early Gen 3s had software and hardware issues where the Intelligent Power Module (IPM) would overheat and "pop," leaving the car dead in its tracks.
Oil Thirst: Due to the design of the oil control rings, many Gen 3s begin consuming a litre of oil every 1,000 miles once they pass 100k miles.
### The Gen 4 "Refinement" (Why it's the winner)
Toyota treated the Gen 4 as a "fix-it" project. They kept the efficiency but overhauled the engineering:
The 2ZR-FXE Engine Update: They redesigned the cooling passages and the EGR system. The head gasket issue is effectively non-existent on the Gen 4.
The eCVT Overhaul: The transmission was made smaller and more efficient, moving the two electric motors onto different shafts. This reduced internal friction and heat.
Heat Management: The Gen 4 uses an active grille shutter system and a faster-warming coolant loop, which reduces the "cold start" wear-and-tear that often killed Gen 3 engines.
Not saying the above is correct, but might be worth checking
Firefly