The 2004 Volvo S40 has no open NHTSA recalls. Owners report 7 recurring issue clusters, led by “Intermittent electrical and instrument cluster faults.” Volvo schedules maintenance every 10,000 miles or 12 months, whichever comes first — the cluster's service reminder counts down to it. Drive-E four-cylinder engines (2015+) require Volvo-spec 0W-20; the older five-cylinder turbos (XC70, C30) run on a timing belt with a firm replacement interval, not a chain. AWD Volvos use a Haldex-style rear coupling whose fluid service is the difference between an AWD system that lasts and a four-figure pump-and-clutch repair.
No open recalls on file. NHTSA lists no unrepaired safety recalls for this year, make and model. A recall can be issued at any time, and a specific car can still have one open — check yours by VIN at nhtsa.gov/recalls.
What drivers and federal regulators have officially reported about the 2004 Volvo S40.
ELECTRICAL SYSTEM
5 NHTSA complaints · 2005-03 → 2006-12
“I WAS DRIVING HOME AT NIGHT WHEN ALL OF THE GAUGES IN MY CAR WENT OUT COMPLETELY”
“DASHBOARD, RADIO, CLIMATE CONTROLS TURN-OFF BY THEMSELVES”
“THE WINDSHIELD WIPERS SUDDENLY CUT ON AND OFF AT TIMES; THE POWER WINDOWS AND DOORS DID NOT WORK, AND GAS GAUGE ALWAYS SHOWED THAT VEHICLE HAD NO FUEL”
FUEL SYSTEM, GASOLINE
8 NHTSA complaints · 2010-03 → 2016-06
“THE CONTACT STATED THAT WHILE DRIVING 55 MPH, THE ENGINE STALLED”
“ON CERTAIN VOLVO VEHICLES, INSUFFICIENT SEALING OF THE FUEL PUMP ELECTRONIC MODULE MAY LEAD TO WATER INGRESS CORROSION, POSSIBLY CAUSING THE UNIT TO FAIL”
“WHILE DRIVING AT APPROXIMATELY 10 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE DID NOT RESTART”
AIR BAGS
5 NHTSA complaints · 2011-02 → 2018-06
“SRS LIGHT HAS BEEN COMING ON SINCE 2007. DEALERSHIP HAS REPLACED WIRING, AIR BAGS AND NOTHING HELPS”
“SRS WARNING LIGHT ON DEFECTIVE OCCUPANT WEIGHT SENSOR”
“THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER, WHERE THE FRONT DRIVER'S SIDE AIR BAG WAS REPLACED. ONE YEAR LATER, AFTER THE REPAIR WAS PERFORMED THE FAILURE RECURRED”
AIR BAGS
3 NHTSA complaints · 2005-07 → 2009-03
“THE PASSENGER SIDE AIR BAG DEPLOYED, BUT THE DRIVER'S SIDE AIR BAG DID NOT”
“MY AIRBAGS DID NOT DEPLOY ALTHOUGH THE SENSORS WERE ACTIVATED ACCORDING TO THE COLLISION CENTER”
“DURING A FRONTAL DRIVERS SIDE CRASH THE DRIVERS SIDE AIRBAG DID NOT DEPLOY CAUSING INJURY TO THE DRIVER”
SERVICE BRAKES, HYDRAULIC
6 NHTSA complaints · 2007-12 → 2015-11
“MY 2004 VOLVO S40 OCCASIONALLY DOES NOT SEEM TO HAVE ANY HYDRAULIC BRAKE ASSISTANCE WHEN IT IS FIRST STARTED IN THE MORNING”
“FOR THE PAST TWO MORNINGS MY CAR HAS NO BRAKES WHEN I FIRST START MY CAR, ONCE I HAVE BEEN DRIVING FOR A FEW MINUTES IT'S OKAY, BUT FIRST THING THE PAST TWO MORNINGS I HAVEN'T HAD BRAKES!”
“THE FAILURE IS THE CAR HAS A HARD TIME STOPPING WHEN THE BRAKES ARE APPLIED THE CARE CONTINUES TO MOVE AND ROUGH ENGINE IDLE”
VEHICLE SPEED CONTROL
7 NHTSA complaints · 2005-03 → 2011-03
“THE CONTACT STATED THAT AS THE VEHICLE WAS STARTED, THE ENGINE EXHIBITED AN ABNORMAL INCREASE IN ENGINE RPMS UP TO 4000”
“WHILE ATTEMPTING TO PARK THE VEHICLE WITH THE BRAKE PEDAL DEPRESSED, THE VEHICLE ACCELERATED ON ITS OWN AND CRASHED INTO A TELEPHONE POLE”
“THE CONDITION CAUSES THE VEHICLE TO ACCELERATE WHEN APPLYING THE BRAKES”
STEERING
3 NHTSA complaints · 2008-04 → 2011-07
“THE STEERING LOCKED ON OUR 2004.5 VOLVO S40 T5 AS MY WIFE AND 6 WEEK OLD DAUGHTER WERE BACKING OUT OF OUR DRIVEWAY UNDER POWER”
“ON 23RD FEBRUARY 2009, THE STEERING WHEEL COMPLETELY FROZE UP ON THE INTERSTATE MAKING IT VERY DIFFICULT TO CHANGE LANES, ETC”
“WHILE DRIVING 60 MPH, THE CONTACT EXPERIENCED EXTREME DIFFICULTY STEERING THE VEHICLE”
Issues on other model years
Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 20, 2026. Investigation data refreshed Sep 20, 2026.
We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.
Critical for safety and preventing major damage
Replace every 10,000 miles or 12 months with Volvo-spec oil (VCC 0W-20 on Drive-E engines). Turbo five-cylinders in the older XC70/C30 are harder on oil — many specialists suggest 7,500 miles on those.
Estimated cost — typical U.S. ranges
Dealer
~$120–$160
Shop
~$85–$115
DIY
~$25–$55
Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.
Volvo's five-cylinder engines use a timing belt: replace around 105,000 miles or 10 years (verify your year's exact interval). Interference engine — do the tensioner and idlers in the same job. Drive-E four-cylinders (2015+) use a chain instead.
Estimated cost — typical U.S. ranges
Dealer
~$935–$1175
Shop
~$655–$825
DIY
Pro only
On interference engines, a snapped belt destroys valves. Worth doing on schedule. Bundle water pump + tensioner — labor is already there.
Rotate at every annual service. AWD models: replace tires in matched sets — tread mismatch works the Haldex coupling constantly.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Often free at the shop where you bought the tires — worth asking before paying.
Inspect pads, rotors, and hoses at every service. Heavy XC90s wear front pads quickly in city duty; check electronic parking-brake function on 2016+ models.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.
Replace DOT 4 fluid every 2 years regardless of miles — standard practice for the moisture-absorbing fluid, and cheap insurance for the ABS unit.
Estimated cost — typical U.S. ranges
Dealer
~$180–$200
Shop
~$125–$140
DIY
~$10–$25
DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.
Keeps your vehicle running smoothly and efficiently
AWD models: replace the rear coupling's fluid roughly every 40,000 miles (Volvo's published interval varies by generation — check your manual). Skipping it clogs the pump filter and kills the AWD unit; whirring from the rear axle is the classic late symptom.
Estimated cost — typical U.S. ranges
Dealer
~$220–$290
Shop
~$155–$205
DIY
~$40–$90
VW/Audi/Volvo AWD coupling — specific fluid required. Filter usually swapped at the same time.
The Aisin 8-speed is labeled long-life, but Volvo specialists broadly recommend fluid service around 60,000 miles — sooner with towing. Use the specified JWS/Toyota WS-type fluid for your gearbox.
Estimated cost — typical U.S. ranges
Dealer
~$330–$500
Shop
~$235–$355
DIY
~$60–$180
Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.
Drive-E turbo fours: plugs around every 60,000 miles. Supercharged+turbocharged T6/T8 engines run higher cylinder pressures — don't stretch the interval.
Estimated cost — typical U.S. ranges
Dealer
~$285–$390
Shop
~$200–$275
DIY
~$25–$100
Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.
Replace roughly every 30,000 miles; inspect annually in dusty climates.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
5-minute job on most cars; the airbox lid usually has clips, no tools needed.
Extends the life of your vehicle and improves comfort
Volvo specifies frequent cabin-filter replacement — annually on most models, in keeping with the brand's air-quality focus (CleanZone on newer cars).
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.
Volvo long-life coolant typically runs ~10 years on the schedule; refresh with Volvo-spec coolant around 100,000 miles per independent-specialist practice.
Estimated cost — typical U.S. ranges
Dealer
~$285–$330
Shop
~$200–$235
DIY
~$25–$60
Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.
Occupant deaths in fatal crashes (FARS)
18 crashes 1990–2024
How the 18 occupant deaths break down
11
driver deaths
7
passenger deaths
18
occupant deaths
Crash years covered: 1990–2024 This model year first appears in 2004 crashes. Older models have had more years on the road to appear in these crashes, so a higher count here does not by itself mean a vehicle is less safe.
FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road. How to read this number
FARS 2024 data is an annual report file. NHTSA revises these records when the final file is published, so this count can change.
Every vehicle has exactly one driver seat, so driver deaths line up fairly when you compare one model to another. Occupant deaths include passengers, so a three row SUV can show a higher number than a two seat car simply because it carries more people.
Both figures are plain counts, not rates. A rate would need to know how many of each vehicle are on the road, and that registration data is not public, so we do not publish rates or scores of any kind.
IIHS publishes driver death rates using this same driver only idea, paired with a registered vehicle years denominator we do not have. Their rates and these counts answer different questions, so do not read either number here as a safety rating.
Owner-reported problem signals
Separate from the federal fatality data above: complaints owners filed with NHTSA about this year and model. These are reports of problems, unverified, and are counted here only as signals.
5
complaints mentioning a crash
1
complaints mentioning a fire
Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.
How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.
This maintenance schedule for the 2004 Volvo S40 reflects Volvo's published service intervals and the Volvo Service Reminder system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.