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Chart based on 83 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2007 Mazda CX-7
Engine not specified
90000 mi
US $800
Oil cooler leak. Guy at Mazda said it should have been recalled for it but never was. Known horrible issue.
£15000
Cam belt tensioner gave out leading to a complete engine failure. Also took out turbo, transfer case and starter motor. In the end I decided it was to costly to repair.
46000 mi
1-2 second rattle at start up. VVT issues problem fixed under warranty.
48000 mi
US $100
Oil Leak, Valve cover gasket, PCV, and another o ring on the on valve cover
Blown engine. It started with a blown water hose that caused the car to run hot.
110000 mi
US $2500
Turbo failed
150100 mi
US $290
EGR valve needed replacement
153000 mi
US $400
Fuel injector replaced
127000 mi
US $60
Motormount
130000 mi
Valve purge solenoid was stuck open
144000 mi
US $200
Timing chain and actuator replaced Oil cooler oil filter housing and gasket
27900 mi
C $182
... turbo charger replaced under warranty(was leaking oil)and schedule maintenantce at 48000km
50000 mi
Car Turbo broke. With total cost of repair it was too expensive to fix. Decided to get a new car.
51800 mi
White smoke out of tail pipe. Installed turbo vent kit and extend warranty service.
56000 mi
US $87
Engine light came on. Diagnosed bad gas cap. Replaced with Mazda cap.
14880 mi
Motor was a bit noisy at ignition. Replaced one of timing belt sprocket.
44000 mi
US $593
Rattle in engine; ACTR.VARia;Washer; Bolt.Lock replaced.
117800 mi
C $975
Leaking engine oil excessively
119660 mi
Check engine light came on. Was showing timing chain slip. Did not repair. Just sold the car
8000 mi
Acceleration / throttle response not consistent
6000 mi
Car bucked during acceleration.
Replaced O2 sensor
Reflashed Power Control Module and Transmission Control Module
90830 mi
error code noticed because of warning light. Regular test for emissions, but failed
91140 mi
C $580
Reset OBDII error with Dealers OBDII machine, retested emissions, failed again. Reprogrammed OBDII system and Reset error code. Evaporative system and intake air temp were in the list of things. OBDII Air intake temp, reflashed the ECU, but not able to fix the OBDII Error.
20000 mi
Engine also got a reflash for the ECU.
34000 mi
Tailpipes were leaving soot on rear bumper. New tips installed, problem solved.
46000 mi
Turbo seals leaked oil on intake and exhaust sides. ruined 02 sensor. Smoke poured out of the exhaust after 20 minutes of idling. Replace turbo and 02 sensor, turbo glowed neon orange. Took to 2nd dealer. Area manager said ok per computer. Still smokes.
43000 mi
Passenger motor mount leaked fluid all over causing clicking sounds when turning and knocking over bumps. Replaced mount under extended warranty.
84700 mi
US $1200
VVT Actuator failed, and caused a rattle at startup. Reported under Extended warranty but said not a problem in 2010. Now it was bad enough another dealer, out of warranty said bad. $1200 for VVT, timing chain and more. Sucks.
3750 mi
Cel for leaking gas cap, replace cap
15000 mi
Poor engine performance from a rest, engine knock when using premimum gas
16000 mi
Engine ecu updated with new software per TSB
26000 mi
Sometimes exhibits severe engine knock on reapplying throttle after slowing down. Mazda reflashed the ECU Car had severe engine knock on trip home from dealer. This time they replaced the fuel pump. seems to have repaired the problem.
32000 mi
Severe engine pinging upon light acceleration when using premimum fuel.
33000 mi
Engine knocking on premium fuel. Engine ECU updated with 2008 version and VVT actuator replaced. per TSB.
11000 mi
Bad gas cap. Replaced gas cap under warranty. Bad O2 sensor. When replacing dealer also damaged catalytic converter.
12000 mi
Check engine light. Dealer diagnosed a flutter control valve in the intake manifold. Stability control warning light comes on and stays on during start ups on cold (ie below approx 10deg F) days. Light stays lit for entire trip. Dealer reported many cars do that, but Mazda currently does not have a fix.
12000 mi
Shutter valve malfunction. Dealer stated parts were in, but they weren't. Dealer attempted to modify part per TSB, but fix didn't work. Part is still on order. Bad O2 sensor. Part took 14 days to arrive. Flutter valve replaced. Stability Control light stays lit after cold starts (single digit temps and below). On this visit, problem as attributed to flutter valve issue. Problem has reocurred in March, however.
98000 mi
I bought his car in Nov 2015. It already had a rebuilt engine . From what the mechanic said ,it was the timing chain. Since I bought it it runs great .
Plastic melting smell comes from engine after 30min driving in highway.
repair was done but not successfull VVT was replaced, due to some noises from engine
57000 mi
US $300
CE light - was faulty gas cap, replaced cap and good!
70000 mi
US $600
Timing chain tensioner and chain Broken motor mount Repair broken motor mount - fixed under my 3rd party extended warranty
75500 mi
US $700
CE light - was EGR valve, was stuck closed. Dealer did repair. Not covered under Mazda, CPO or 3rd party extensive warranty.
71300 mi
C $790
Replaced EGR valve.
26500 mi
engine light came on, replaced a sensor & computer was upgraded
27 mi
US $21500
car got stuck in third gear, they replaced a sensor
61000 mi
US $225
Water collected in the spark plug well and affected the spark coil. Engine misfired under load, Check Engine light came on, dirty oil, random misfire reported in computer. Removed water, replaced spark plug cap/coil, no further symptoms.
29140 mi
Check Engine light came on.. was told had to pay 100 to hook it up and find the code for the problem.. would not pay so left light on.. dealer told me it could be gas cap.. after 3 days light went out..
1000 mi
TSB for ECU reflash to improve acceleration
TSB for lower door seals to replace with new design to seal doors better
TSB for Gas Cap to prevent CEL due to old design causing these though not in my case
87000 mi
US $2900
VVT Bolt and Chain loose. Updated Parts installed. But since it was now out of warranty I had to pay for this my self out of pocket.
4 mi
Replaced gas cap, no charge
83000 mi
US $1500
Replaced turbo. Bearings went bad. Car is very hard on oil. Must run synthetic and change every 3k. Not exaggerating. Motor runs hot and creates sludge in oil. Poor design.
116300 mi
US $10
Cleaned mass airflow sensor. Added fuel injector cleaner to fuel tank.
130000 mi
US $2500
Had several oil leaks repaired.
1300 mi
Replaced an ignition coil pack that had failed.
3000 mi
Re-flashing the PCM, because of "Lack of power" TSB
27000 mi
US $5
Bad gas cap. New one ordered.
1000 mi
TSB to flash the computer to address slow downs under 2500 RPM.
37000 mi
the previous owner did not do a good job w/maintaining oil change. There was a large amount of oil build up which require for a part to repair not exact what it was called. My vehicle had to flushed twice before replacing part.
7000 mi
Trans hunting for 5th and 6th during hi-way driving. Dealer flashed computer with new program.
52000 mi
US $1
timing chain broke. got rid of car!
16000 mi
The turbo on the car broke and had to be replaced
15000 mi
VVT gear replaced. Engine rattled loudly on startup and felt lumpy on acceleration. Engine oil pan and trans pan were also removed and re-sealed as they were leaking slightly due to poor RTV application when built.
1150 mi
AT & CEL illuminated. Vehicle stuck in 3rd. TCM replaced & TCU reprogrammed.
3000 mi
After pulling onto a busy three-lane roadway, I got about a tenth of a mile and then the car just went dead. I had no acceleration or response, the car wasn't in any gear, and the power steering was gone. After a few minutes, it did restart.
2000 mi
Check Engine Light - Gas cap replaced
2500 mi
CEL - Intake Swirl valve replaced
62000 mi
US $1200
Stuck EGR valve
77000 mi
US $800
Oxygen sensor and mass air flow sensor replaced
54560 mi
A $600
The engine mount was replaced and fluid from old mount was not cleaned from the engine area. I have never seen an engine filled with fluid before.
66340 mi
A $790
There was a leaking oil filter which only needed to have a new seal and not the whole filter fitted. Mazda dealer used the excuse that there aren't seals available to which I said yes there is seals available. To which I told him rather than keep the repairs cheap and use a 50c seal you want to gouge the owners and charge $390.00 plus labour. Eventually he credited $144.00 for labour plus other incidentals of $15.00 but I told them I wasn't happy with their service and to top it off they stole my parking card which I use when I travel to work in the city.
6000 mi
Hesitation/stumbling under hot or cold conditions. TSB available for fuel pump and/or PCM reprogram. Dealer states turbo lag is problem and vehicle acting normally.
38440 mi
oil leaking; seal to be replaced seal replaced
56000 mi
US $60
Exhaust system heat shield around catalytic convertor rattling. Upper half welds to lower half rusted. Heat shield between exhaust manifold and firewall/cowl in engine comp.deteriorated and came loose. Very flimsy...requires replacement.
36000 mi
EGR Valve failed. Dealer replaced and also replace the fuel filler neck. Extended warranty covered most of the repair and paid for the rental. Dealer also replaced oil pan gasket because of a leak they found.
16000 mi
Vacuum pump failed
34600 mi
Replaced fuel filler pipe per Mazda TSB due to complaints of engine light on.
49000 mi
US $2400
Turbocharger tube leaking
19000 mi
#4 coil and spark plugs replaced
58000 mi
Rattle on start up was diagnosed as timing chain issue. Replaced timing chain and related parts. Check engine light was on. Dealer went through process outlined in TSB and reflashed computer.
65000 mi
US $175
Check engine light and occasional miss caused by bad/sticking EGR valve. Part replaced and symptoms now gone.
65000 mi
US $150
Misfire returned. They cleaned the mass air sensor, but it did not fix it (it came back within a week). They told me they were going to charge me $150, but have not done it yet (and I suspect will not). I may try a different dealer this time.
65000 mi
Intermittent misfire cured by replacing spark plugs. Shop had recently replaced plugs with spec, but not OEM, plugs, which seemed to have caused the problem. Replaced with OEM plugs. Unclear if issue was plug type or one defective plug.
14000 mi
Driver reported that on acceleration from a stop the throttle appeared to be stuck. Had to turn the car off to stop accelerating.
22000 mi
oxygen sensor failed and stuck to catalytic converter
23000 mi
o2 sensor and catalytic converter. o2 sensor and catalytic converter. machined brakes (warped again)
39000 mi
White steam at idle problem - was fixed by dealership under powertrain warranty
See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how
frequently 2007 Mazda CX-7 problems occur, check out our car reliability stats.