2007 Lexus IS250 - Maintenance Log

Gear Review

Maintenance Log: 2007 Lexus IS250

Analyzing four years of repair costs, warranty savings, and fuel efficiency

$6,410

Total Paid

$8,010

True Cost

~$2,137

Annual Avg

~25.8

Avg MPG

Table of Contents

• ①Ownership Cost Analysis
• ②Maintenance Cost by Type
• ③Annual Repair History
• ④Gas Mileage Log

Section I

Ownership Cost Analysis

Currently, I'm averaging $2,137 a year in maintenance costs, but this is largely due to major repairs required for the engine and suspension.

Prepaying for a warranty helped defray $1,600 in additional maintenance. Without it, the true cost would have been $2,670 per year. In either scenario, the cost of this car was too high and not worth owning, as even larger repairs were likely on the horizon, such as the short block and transmission.

 

Lifetime Maintenance Totals

• →2018 — $2,900 (Warranty purchase)
• →2019 — $600
• →2020 — $2,035
• →2021 — $875

The true cost of keeping this vehicle on the road was $8,010, though the actual out-of-pocket spend was reduced to $6,410 thanks to the warranty coverage.

Section II

Maintenance Cost by Type

The bulk of the expenses were concentrated in Engine and Suspension work (61%), followed by consumables like tires and brakes and standard preventive care.

Category	Percentage	Key Components
Engine	30%	Alternator, O2 Sensor, Valve Cover Gasket
Suspension	31%	Front Bushings, Rear Axle
Consumables	21%	Tires, Brakes, Battery
Preventive	17%	Oil Changes

Expenditure Breakdown

• →Tire Services — $460 total spent on maintenance and replacement.
• →Brakes and Rotors — $1,100 for a full set of four.
• →Battery — $50 out of pocket (True cost $150).
• →Oil Changes — $1,400 in total preventive engine care.
• →Alternator — $100 deductible (True cost $1,100).
• →O2 Sensor — $100 deductible (True cost $600).
• →Valve Cover Gasket — $100 deductible (True cost $700).
• →Front Bushings — $100 deductible (True cost $800).
• →Rear Axle — $100 deductible (True cost $1,700).

Section III

Annual Repair History

2018

• →Warranty — $2,900 investment to cover future repairs.
• →Total for year — $2,900.

2019

• →Alternator — $1,100 repair ($100 deductible).
• →Battery — $150 replacement ($50 deductible).
• →Oil Change x2 — $450 for standard maintenance.
• →Total for year — $600 (True cost $1,700).

2020

• →Front Tires — $400 for new rubber.
• →Front TPMS Sensor — $60 for sensor replacement.
• →Brakes & Rotors x4 — $1,100 for full brake service.
• →Oil Change x2 — $475 for standard maintenance.
• →Total for year — $2,035.

2021

• →Front Bushings — $100 deductible (True cost $800).
• →Rear Axle — $100 deductible (True cost $1,700).
• →O2 Sensor — $100 deductible (True cost $600).
• →Valve Cover Gaskets — $100 deductible (True cost $700).
• →Oil Change x2 — $475 for standard maintenance.
• →Total for year — $875 (True cost $4,275).

Section IV

Gas Mileage Log

Fuel efficiency was tracked closely to monitor the impact of repairs and environmental conditions on performance.

Date	MPG	Notes
7/31/20	27.0	Significant improvement from 23-24 MPG after installing new tires.
8/21/20	27.0	Consistent performance despite reduced driving during COVID-19.
9/11/20	26.0	Noted a slight drop; monitored for potential causes.
9/29/20	26.0	Adjusted rear tire pressures which were inflated too high.
10/1/20	—	Confirmed front tires were low after cooling; top-off required.
11/24/20	26.0	Suspected the "new tire" mileage benefit may be waning.
12/31/20	26.0	No improvement noted immediately following an oil change.
1/17/21	27.0	Improvement likely due to recent oil change and proper tire inflation.
2/5/21	26.0	Performance remains steady.
2/23/21	26.0	Holding steady with consistent fill-up intervals.
3/11/21	27.4	Achieved high marks following a long-distance trip.
4/19/21	24.0	Significant drop likely caused by increased traffic.
5/6/21	25.5	Slight improvement but still below expected efficiency.
5/24/21	25.0	Cleared a cabin air filter obstruction, improving A/C efficiency.
6/11/21	24.5	Mileage drop after running the tank near empty before refilling.
7/31/21	26.0	Baseline returned following major mechanical repairs.
8/10/21	24.5	Drop attributed to heavy traffic conditions.
8/25/21	25.8	Improved slightly; aiming for a consistent 26 MPG.

Tip: Boyle’s Law explains how tire pressure changes with temperature. Always check and adjust your PSI after the vehicle has cooled down to ensure maximum fuel efficiency and safety.

Tracking every dollar and mile reveals that while the IS250 is a classic, its aging components can quickly turn a luxury ride into a costly liability.