Used Car Reliability Database

Know the engine before you buy.

Compare vehicle reliability ratings and car engine problems across 50 brands. Backed by 1,546,140 NHTSA federal complaints. Free, no subscription.

10,740 Engines Rated

5,459 Generations Analyzed

1,546,140 NHTSA Complaints

50 Brands

Worst Rated Engines

Engines with the highest complaint density relative to their segment. Based on NHTSA federal data. View full rankings →

J32A2 Acura CL (2001)

3.2L 6-cyl Gasoline 226 complaints ❌ Avoid (1.0) #2

N52B30 BMW 1 Series (2008)

3.0L 6-cyl Gasoline 73 complaints ❌ Avoid (1.0) #3

M54B30 BMW 3 Series (2000-2006)

3.0L 6-cyl Gasoline 1,482 complaints ❌ Avoid (1.0) #4

M54B25 BMW 3 Series (2000-2006)

2.5L 6-cyl Gasoline 1,456 complaints ❌ Avoid (1.0) #5

M54B30? BMW 3 Series (2000-2006)

3.0L 6-cyl Gasoline 601 complaints ❌ Avoid (1.0) #6

N42B20 BMW 3 Series (2012-2018)

2.0L 4-cyl Gasoline 273 complaints ❌ Avoid (1.0) #7

N62B44 BMW 5 Series (2004-2010)

4.4L 8-cyl Gasoline 141 complaints ❌ Avoid (1.0) #8

M54B25 BMW 5 Series (2004-2010)

2.5L 6-cyl Gasoline 126 complaints ❌ Avoid (1.0) #9

Electric/2-Cyl .Gasoline BMW i3 (2017)

0.6L 2-cyl Electric 76 complaints ❌ Avoid (1.0) #10

LY7 Buick Enclave (2008)

3.6L 6-cyl Gasoline 472 complaints ❌ Avoid (1.0) #11

L26 Buick Lacrosse (2005)

3.8L 6-cyl Gasoline 223 complaints ❌ Avoid (1.0) #12

LF1 Buick Lacrosse (2010)

3.0L 6-cyl Gasoline 123 complaints ❌ Avoid (1.0)

Most Reliable Engines

Engines with the lowest complaint density in their segment. Proven reliability across multiple model years. View full rankings →

3UR-FE Lexus LX (2008-2021)

5.7L 8-cyl Gasoline 27 complaints ✅ Recommended (4.4) #2

B4204TSH(HP) Volvo XC60 (2018-2025)

2.0L 4-cyl Electric 23 complaints ✅ Recommended (4.3) #3

B6324S5 Volvo XC70 (2008-2016)

3.2L 6-cyl Gasoline 26 complaints ✅ Recommended (4.3) #4

JNA2 Acura MDX (2014-2020)

3.0L 6-cyl Gasoline 24 complaints ✅ Recommended (4.1) #5

LTG - Spark Ignited Direct injection, Variable Valve Timing, ALUM DOHC, DCVCP TURBO, E0-E100, ALUM Chevrolet Malibu (2016-2024)

2.0L 4-cyl Gasoline 31 complaints ✅ Recommended (4.1) #6

LFB1/LFB2 Honda Accord (2018-2022)

2.0L 4-cyl Gasoline 28 complaints ✅ Recommended (4.1) #7

A25A-FKS Lexus NX (2022-2025)

2.5L 4-cyl Gasoline 23 complaints ✅ Recommended (4.1) #8

1AR-FE Toyota Highlander (2014-2019)

2.7L 4-cyl Gasoline 25 complaints ✅ Recommended (4.1) #9

B6304T4 Volvo S60 (2011-2018)

3.0L 6-cyl Gasoline 30 complaints ✅ Recommended (4.1) #10

V35A-FTS Lexus LS (2018-2025)

3.4L 6-cyl Gasoline 26 complaints ✅ Recommended (4.0) #11

B4204T (MP) Volvo V60 (2019-2025)

2.0L 4-cyl Gasoline 25 complaints ✅ Recommended (4.0) #12

3.3L Ti-VCT Ford Explorer (2020-2025)

3.3L 6-cyl Gasoline 30 complaints ✅ Recommended (3.9)

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2 models · 0 engines

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How We Rate Engines

Every rating is derived from NHTSA federal complaint data — the same database used by government safety investigators. We decode VINs to identify specific engines, then compare complaint density within each vehicle segment. No subscription required. No manufacturer sponsorship.

Powered by: NHTSA Complaints Database · NHTSA VIN Decoder · TWD Editorial Analysis

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