The Lemon Index
200220045th generation (C5)
23 owner complaints, first 3 years 19–20 mpg combined, EPA
Similar cars, same year
Lemon Index: 100 = the average car, lower is better.
Engines & versions
When problems show up
Only 12 complaints listed a mileage: too few to say when problems show up.
Questions to ask the seller
- Were recalls 09E025000 (lights), 09E012000 (lights) and 04V060000 (steering) done? Ask for the dealer printout, or check the VIN.
- Any slipping, hard or late shifts, or a transmission warning light? Ask for transmission fluid service records.
- Any steering noise, wander or power-steering warning? Has the steering rack or pump been replaced?
- Any oil burning, leaks or check-engine lights? Ask for oil-change records.
- Chevy sent dealers 456 repair notes for this car. Was this one done: “Engine knock or lifter noise”?
From this year's own recalls, top problems, top repair bills and Chevy's repair notes. Recall repairs are free at any dealer.
How serious. Out of all 23 owner complaints filed so far (every year since it was sold, not just the first 3), owners reported:
“Average car” = what the same number of complaints would include at the rate across every model year we track. Owners report these themselves; NHTSA doesn't confirm the cause.
What owners complain about most. From owner complaints to the government.
Share of this year's owner complaints filed with NHTSA, not the share of cars that break. One complaint can name more than one area.
Check engine light on? Look up any code →
When owners reported problems. From owner complaints to the government.
Most owners who filed a complaint with NHTSA had 0K to 13K miles (1K to 22K km) on the car (12 of all 23 complaints filed so far listed the miles). This shows when people who had a problem reported it, not the odds that your car will have it.
In owners' words
After recall was done on 2003 Chevrolet Corvette the steering wheel locked while in motion.
2003 Chevrolet Corvette owner · NHTSA complaint 10141061
More owner reports
While accelerating from a stop into an intersection the vehicle failed to shift from first gear into second gear. As a result, the vehicle became inoperative.
NHTSA complaint 10073607
While shifting from first gear to second gear vehicle jerked. Consumer took the vehicle to the dealer for inspection, and mechanic could not duplicate the problem.
NHTSA complaint 10071602
Fixes owners look up most.
From 195 YouTube videos · 28.7M views · 1997–2004 Chevrolet Corvette
What owners say one repair costs on YouTube
- Brakesone repair, as owners say it$264most $160–$500 · 7 videos▶ Hear it
- Tiresone repair, as owners say it$1,750most $600–$2,400 · 6 videos▶ Hear it
- Water pump / coolingone repair, as owners say it$150most $50–$600 · 5 videos▶ Hear it
- Oil changeone repair, as owners say it$75most $45–$200 · 5 videos▶ Hear it
- Oil leak repairone repair, as owners say it$50most $22–$500 · 5 videos▶ Hear it
Most-watched topics
- Oil changes & service383K views
C5 Corvette TPMS ResetSpinolio · 259K views · 3 videos - Transmission & shifter330K views
2002 Chevy Corvette clutch replacementDave's Auto Center · 289K views · 2 videos - Heat, A/C & blend door134K views
C5 Corvette A/C IssuesMy Corvette Life · 69K views · 2 videos - Gauges, lights & wiring67K views
ONCE AND FOR ALL C5 CORVETTE FUEL GAUGE FIX!VetOnVettes757 · 39K views · 2 videos
Show 4 more
- Timing chain & engine50K views
How to install C5 Corvette Sun Visors - Step-by-step GuideC&S Corvettes · 50K views - No-start: theft light, key & ignition45K views
Cleaning C5 Corvette Ground Points/NegativesiDriveDaily · 45K views - Intake, EGR & engine sensors37K views
Corvette C5 wheel speed sensor issues by froggyfroggy · 37K views - Brakes & ABS34K views
C5 Corvette Common Failure! EBCM Module Repair!! ABS/Traction Control Dash Light! Auction Car Reconditioning · 34K views
Before you buy, watch
C5 Corvette Buyers Guide (Get Informed - Then Purchase!)Toys4Life C5 · 404K views
C5 Corvette Buyer's Guide: Which years are the BEST?C&S Corvettes · 220K views
Common Problems with the C5 Corvette - Know This Before Buying!Brendan Buchler · 157K viewsViews show how many people looked up each fix, not how often it breaks. Videos belong to their creators; we link to them. The 2003 is the same generation.
Costs are the middle (median) of the dollar amounts people say out loud in these videos, so one wild number can't swing it. They aren't verified bills or sales; real prices depend on year, miles, condition and where you live. Tap Hear it to jump to the moment.
Problems Chevy told dealers about
Chevy sent dealers 456 repair notes for this car. The ones about its biggest problems:
- Engine knock or lifter noise
- Fluid leak from the rear axle side left hand side
- Using the correct lock tight product when servicing a rear axle fluid leak from the…
Ask a seller or mechanic if these were done. Some are free under warranty or a special program.
Recalls 3
- Lights · recall issued 2009
DECREASED LIGHTING VISIBILITY MAY RESULT IN A VEHICLE CRASH.
- Lights · recall issued 2009
SABERSPORT IS RECALLING 16,270 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES.
- Steering · recall issued 2004
ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH ELECTRONIC COLUMN LOCK SYSTEMS (ECL), WHEN THE IGNITION SWITCH IS TURNED TO "LOCK," THE ECL SYSTEM PREVENTS TURNING OF THE STEERING SYSTEM.
Recall repairs are free at any dealer. A recall only matters if it's still open on that exact car, so check its VIN.
Canada? See recalls at Transport Canada
Every Chevrolet Corvette recall, all years · All Chevrolet recalls
Government investigations
- ClosedSteering column lockup2002–2004
NHTSA looks into a problem when enough owners report it. Many end in a recall.
Safety
Crash stars (older test): front — · side — · rollover —
Fuel cost and engines
About $3,750–$3,950 (USD) a year in fuel (EPA estimate at U.S. prices, 15,000 miles or 24,000 km a year). Engines: 5.7L 8-cyl.
Every Chevrolet Corvette year. 2003 is highlighted. Lower is better.
Show 3 older years (1997–1999, YouTube reviews only, no complaint data)
Newest year first. Red = worse than average, gray = about average, too new (2023+: a partial score, marked “partial”) or too few complaints to score. #1, #2… = that year's YouTube rank among the 22 Chevrolet Corvette years with enough videos (#1 = the year owners and reviewers talk about most positively). It is not a reliability rank.
Embed this chart
Put this chart on your site, blog or forum. Free, with the credit line built in; the 2003 bar is highlighted.
<iframe src="https://lemonindex.com/embed/cars/chevrolet-corvette/?y=2003" title="Chevrolet Corvette reliability by model year (The Lemon Index)" width="100%" height="629" style="border:0;max-width:720px" loading="lazy"></iframe><p style="font-size:13px;margin:4px 0 0">Data: <a href="https://lemonindex.com/cars/chevrolet-corvette/2003/">Lemon Index</a> (2003 Chevrolet Corvette reliability)</p>Quick answers
Is the 2003 Chevrolet Corvette reliable?
About average by government complaints. It drew about the average number of complaints filed with NHTSA in its first 3 years, per car sold (Lemon Index 101; 100 is average, lower is better). 2003 is one of the better years of a model that draws 1.5× the average car's complaints. The Chevrolet Corvette year with the fewest complaints per car sold since 2010 is 2021.
What are the most common 2003 Chevrolet Corvette problems?
In owner complaints to the government, the parts named most are transmission & drivetrain (39%), steering (17%) and engine (9%). That is the share of complaints, not the share of cars that break.
How many recalls does the 2003 Chevrolet Corvette have?
3 safety recalls (latest: lights). Recall repairs are free at any dealer; check a specific car's VIN at nhtsa.gov/recalls.
What gas mileage does the 2003 Chevrolet Corvette get?
19 to 20 mpg combined, depending on the engine (EPA estimate).
Does the 2003 Chevrolet Corvette have transmission problems?
Transmission and drivetrain issues make up 39% of its owner complaints.
How much does the 2003 Chevrolet Corvette cost in fuel a year?
About $3,750 to $3,950 a year, by the EPA's current estimate.
What engines does the 2003 Chevrolet Corvette have?
5.7L 8-cyl.
What Chevrolet Corvette year is better than the 2003?
Nearby, the 2004 drew fewer owner complaints per car sold (about two-thirds as many complaints as the average car). Across every year, 2021 drew the fewest.
The Lemon Index counts owner complaints filed with the U.S. government (NHTSA) in a car's first 3 years, per car sold, against the average car of the same model years (100 = average, lower is better). It measures complaints, not crash safety. A complaint is an owner's report, not a confirmed defect. How it works