2008 Audi Q7 155,974 mi, Visitor. Check engin light blink when mash down on gas it say cylinder 7 misfire. 2008 Audi Q7 62,000 mi, Tom TN. Faced with the same problem with misfire. Fault codes: P0300, P0301, P0302, P0304, P0305, P0306. These codes are for cylinder misfire. At odd times 7 at low RPM (below 3000), the engine struggles to stay at engine won't turn over, won't start in the 2007 Q7. 2. keys automatically lock car in the 2015 Q7. 2. squealing from brakes in the 2017 Q7. 2. electronic stability program (ESP) malfunctioning in the 2007 Q7. 2. sunroof drains clogged in the 2008 Q7. Used Audi Q7 2006-2015 review. Q7 is proving to be reliable, with only one or two common issues. This huge SUV has a reputation for getting through a set of front tyres in under 7000 miles and in Audi 4.0T Engine Problems. 1. Ignition Coil Pack and Spark Plug Failure. Ignition coils and spark plugs are very common to go out in many Audiā€™s. The Ignition coils transform the voltage from the battery to a higher voltage for the spark plugs to create a spark and create combustion. The main reason either of these seem to fail is by normal There are six models available for the 2012 Q7: Premium and Premium Plus. 3.0-Liter Supercharged V6 Gas. Horsepower: 280 @ 4,920 rpm. Torque: 295 @ 2,250 rpm. Fuel Economy: 16 mpg city/22 mpg highway. TDI Premium, TDI Premium Plus and TDI Prestige. 3.0-Liter V6 Turbocharged Diesel. Horsepower: 225 @ 3,750 rpm. The vehicle use's 1 quart a week (every 350 to 500 miles), i had the pcv/oil separator replaced and the ecu software updated; the problem continues. Also, it keeps throwing code: P0491 secondary air injection system bank 1 (mine maybe carbon buildup); Audi NA will cover the carbon issue under warranty if the vehicle has approximately 120k miles. 516-766-2223. Buy 2007 Audi Q7 4.2L (ECM) Engine Control Module (PCM/ECU) with a FREE Lifetime Warranty. Get back on the road with our Plug & Drive Module. Worst Audi Q7 Problems #1: Squealing From Brakes 2017 Q7 Average Cost to Fix: $3,400 Average Mileage: 23,000 mi. Learn More #2: Catastrophic Engine Failure 2017 Q7 Average Cost to Fix: $18,000 .

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