Here are two cars which have high marks on fuel economy, reliability and most importantly fun too drive built in!
Expect better build quality in the Jazz than the Swift. Only the japan made Swift is better than both.

Here are the back-to-back specs for each car. Between the two, I'll choose the Swift if price and fuel economy is a major factor. Plus you get very nice aluminum wheels not plastic wheel caps, full-size spare tire not donuts, complete trip computer features and more...

JAZZ vs SWIFT
Price Php 768K vs 608K Swift is lower by 160,000

SPECS
Engine 1496 vs 1197 cc
Power 120 vs 87 PS
Torque 148 vs 114 Nm
* RPM 4800 vs 4000 RPM
Weight 1069 vs 990 Kgs
P-W Ratio 8.91 vs 11.38
Brakes F Disc vs Disc
Brakes R Drum vs Drum
Steering EPS vs EPS
Length 3955 vs 3850 mm
Width 1695 vs 1695 mm
Wheelbase 2530 vs 2430 mm
Clearance 150 vs 173 mm

FEATURES JAZZ vs SWIFT
Power Windows - Yes vs Yes
Side Mirrors - Yes vs Yes
Doorlocks - Yes vs Yes
Steering Controls - No vs Yes
Adj Seatbelt Height -No vs Yes
Third Brake Light - Yes vs Yes
Rear Wipers with Washer - Yes vs Yes
Side Turn Signal Light - In body vs Built-in mirrors
FM Antenna - Long Roof Whip Antenna vs Short Rubber Ducky Style
Immobilizer - Yes vs Yes
Security Alarm - Yes vs No
Alarm in Keys - Yes vs No
Rear Hatch Tray/Cover - No vs Yes
Wheels - Steel with plastic Covers vs Aluminum
Spare Tire - Donut spare tire vs Full size with Aluminum Magwheels
Tires - 175/65R15 vs 185/65R15
Trip Computer - Avg KPL only vs Full Trip Computer (average, range, actual - real time)
Steering Adjustments - Tilt & Telescopic vs Tilt only
Made In - Thailand vs India
Warranty - 3Yx100k vs 3Yx100k