Start by choosing the exact G37 you want
Sedan, coupe, convertible, rear-wheel drive, all-wheel drive, manual, and automatic versions solve different problems. Decide which configuration fits your life before browsing listings. Otherwise, the first attractive price will make the decision for you.
The seller is part of the inspection
A seller who has records, answers direct questions clearly, and welcomes a pre-purchase inspection is reducing uncertainty. A seller who has already warmed the car, cannot explain modifications, or creates artificial urgency is giving you useful information even if the car photographs well.
What to inspect before the test drive
Look underneath for fluid residue and impact damage. Check whether all four tires match, inspect the inside shoulder of each tire, test every electronic feature, and examine the quality of wiring around audio or lighting modifications. A polished exterior cannot compensate for neglected basics.
Use the test drive as a diagnostic process
Begin at low speed, listen during steering input, test the transmission while cold and warm, allow the engine to reach operating temperature, then evaluate braking, highway tracking, vibration, and throttle response. Do not turn the test drive into a joyride before you understand what the car is doing.
Budget for catch-up work
Even a good used performance car may need fluids, tires, brakes, a battery, alignment, or worn suspension components. A purchase only works when you still have money after buying it.
The Dolvren recommendation
Buy condition and documentation before color, wheels, exhaust, or the lowest asking price. A slightly more expensive stock or carefully maintained G37 is usually the more affordable car six months later.
Final recommendation
The most useful next step is not reading another generic opinion. Define the exact configuration you want, establish the total budget, and inspect a real example using a repeatable process.