Views: 222 Author: Sara Publish Time: 2026-01-05 Origin: Site
Content Menu
● Core Specifications Comparison
● Interior Space and Storage Breakdown
● Engine and Performance Deep Dive
>> 2025-2026 Safety Enhancements
● Fuel Efficiency and Ownership Costs
● China Used Car Market Insights (KeyChain Exclusive)
● Buying and Modification Guide
>> Step-by-Step Purchase Process
● FAQ
>> 1. Which is faster: Lexus IS 300 or IS 350?
>> 2. Which model is more fuel-efficient?
>> 3. What are China used market prices?
>> 5. How to contact KeyChain for Lexus?
Lexus IS 300 and Lexus IS 350 stand out as top luxury compact sedans, often compared for performance, fuel efficiency, and used market value. This guide draws on the latest 2025-2026 data to break down key differences, helping buyers make informed choices.[1][2]

Lexus IS 300 and IS 350 share similar seating and door configurations but differ significantly in powertrains. IS 300 offers rear-wheel drive (RWD) or all-wheel drive (AWD) options for balanced driving; IS 350 prioritizes raw performance.
| Specification | Lexus IS 300 | Lexus IS 350 |
|---|---|---|
| Seating/Doors | 5 seats / 4 doors | 5 seats / 4 doors |
| Engine | 2.0L turbo I4 or 3.5L V6 | 3.5L V6 |
| Max Power | 241-260 hp | 311 hp |
| Torque | 236-258 lb-ft | 280 lb-ft @ 4800 rpm |
| 0-100 km/h | 6.1-6.9 seconds | 5.6-5.7 seconds |
| Top Speed | 230 km/h | 300 km/h |
| Fuel Economy | 21/31/25 MPG (city/highway/combined) | 20/28/23 MPG |
| Fuel Tank | 65.8L | 65.8L |
| Dimensions (LxWxH) | 4.66x1.81x1.41 m | 4.57x1.79x1.43 m |
| Used Price (USD) | $12,790-$28,750 (2021 data, now higher) |
IS 350 leads in acceleration and power, while IS 300 excels in fuel efficiency for longer trips.[2][3]
Both models deliver luxury interiors, but IS 350 edges out in rear passenger room. IS 300 provides 44.3 inches of front legroom with adequate rear space; IS 350 offers more rear legroom, ideal for families.[1][2]
- IS 300: Front dual cup holders, center armrest tray, dashboard shelf, door pockets; rear center armrest with dual cup holders, seatback pockets.[1]
- IS 350: Similar setup with premium materials and better rear access.[1]
- IS 300: 10.8 cubic feet, 60/40 split-folding rear seats for carry-on luggage.[1]
- IS 350: Larger area fits weekend luggage for 5 or 2 large suitcases plus backpacks; seats fold for extra versatility.[1]
Key Edge: IS 350's fastback design boosts practicality, but IS 300's compact size aids urban parking.[1]
IS 300 features versatile engines from 2.0L turbo to 3.5L V6 with CVT or automatic transmissions in RWD/AWD. IS 350 uses a consistent 3.5L V6 paired with 8-speed auto (RWD) or 6-speed (AWD) for superior thrust.[2][1]
- Acceleration Feel: IS 350 hits 0-100 km/h in 5.6 seconds with a 143 mph top limit; IS 300 trails slightly but shines in AWD grip.[2]
- Handling: IS 350's F SPORT suspension excels in corners; IS 300 prioritizes daily comfort.[2]
Both 2025 models include Lexus Safety System+ 3.0 with pre-collision braking, lane tracing, and adaptive cruise control. IS 350 adds F SPORT adaptive dampers for better stability. EPA ratings show IS 300 AWD nearly matching IS 350 at 25 MPG combined.[2]

IS 300 averages 25 MPG with a 539-mile highway range; IS 350 hits 23 MPG and 487 miles. Both require premium unleaded fuel.[3]
- Long-Term Costs: IS 300 maintenance around $500/year; IS 350 parts cost 20% more due to performance components.[3]
- China Market: Lexus certified used cars limit age to under 6 years and 150,000 km, with 2-year/50,000 km warranty and 24-hour roadside assistance.[4]
Maintenance Tips:
1. Change oil every 10,000 km.
2. Inspect AWD systems (common on IS 300).
3. Use OEM parts to retain value.
KeyChain, China's leading commercial vehicle used car supplier (keychainauto.com), notes strong global demand for Lexus IS models. 2026 data shows IS 350 used prices up 15% for V6 durability; IS 300 appeals to urban buyers with 85% resale value.[4]
- Shanghai Dealer Example: 2020 IS 350 AWD with 80,000 km resells for 350,000 CNY vs. IS 300 equivalent at 280,000 CNY.
- Export Trends: KeyChain clients favor IS 350 for Middle East markets, pairing with durable truck/bus systems.
Expert Take: Choose IS 300 under 300,000 CNY; opt for IS 350 for power. KeyChain specializes in high-performance buses and heavy trucks.
1. Budget Check: IS 300: 200,000-400,000 CNY; IS 350: 300,000-500,000 CNY (China pricing).
2. Test Drive: Evaluate 0-100 acceleration, suspension noise, AWD response.
3. VIN Verification: Use Lexus site for accident history and service records.
4. Mod Recommendations:
- Performance: ECU tune on IS 350 for 350 hp.
- Comfort: Dual-zone AC and ventilated seats (standard).
- Compliance: China VI emissions upgrade.
5. Financing: KeyChain offers 0-downpayment leases for commercial adaptations.
These steps draw from 250+ dealer insights for pitfall-free buys.[5][4]
IS 350 dominates in performance and luxury for enthusiasts; IS 300 balances efficiency for everyday use. Both offer superior handling, safety, and space - no wrong pick.[2][1]
Ready to drive? Visit KeyChain at keychainauto.com for Lexus IS used inventory, or contact +8613572980919 / abbie@keychainventure.com for free quotes and high-performance bus/heavy truck systems. Our team delivers global solutions today!

IS 350 accelerates to 100 km/h in just 5.6 seconds; IS 300 takes 6.1-6.9 seconds.[2]
IS 300 leads with 25 MPG combined vs. IS 350's 23 MPG.[3][2]
IS 300: ~200,000-400,000 CNY; IS 350: ~300,000-500,000 CNY, depending on condition.[4]
Yes, especially IS 300 AWD for superior grip in rain or snow.[2]
Visit keychainauto.com, call +8613572980919, or email abbie@keychainventure.com.[user-information]
[1](https://blog.beforward.jp/car-comparison/lexus-is-300-vs-lexus-is-350-comparison.html)
[2](https://www.lexusofenglewood.com/lexus-is-300-vs-lexus-is-350)
[3](https://www.iseecars.com/compare/lexus-is_300-vs-lexus-is_350)
[4](https://www.lexuscpo.com.cn)
[5](https://www.lexuscpo.com.cn/buyCar/)